{"title":"Exhaust","description":null,"products":[{"product_id":"er-b48-mini-downpipe","title":"Evolution Racewerks Competition Downpipe — B48 MINI (F-Series)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series downpipe for the transverse-mounted B48 in F-series MINI Cooper S and JCW applications.\u003c\/strong\u003e Mandrel-bent T304 stainless replaces the OEM cat-and-downpipe section. Flow opens significantly, exhaust gas temperatures drop in the post-turbo zone, and the turbo's spool window tightens because the downstream restriction backs off the turbine wheel.\u003c\/p\u003e\n\n\u003ch3\u003eThis is the downpipe on the shop F56\u003c\/h3\u003e\n\u003cp\u003eEsse Werks runs this exact part on the shop's in-house F56 JCW development car — the platform that built our B48 calibration database. It has been on the dyno, on the street, and at the track. The ER B48 MINI application is the most-validated B48 downpipe we tune around.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs High-Flow Catted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless:\u003c\/strong\u003e maximum flow, no cat material. Race \/ competition use. Triggers CEL on stock cal — Esse Werks Stage 2 \/ Stage 3 calibrations clear the rear O2 monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Flow Catted:\u003c\/strong\u003e 200-cell metallic catalyst in line. CEL-clean on stock calibration. ~85% of catless flow. Daily-driver friendly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eFree shipping in the continental US on orders over $100 from Evolution Racewerks (we pass that through — no shipping markup from us)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eMINI F-series Cooper S and JCW (F54 Clubman, F55 5-Door, F56 3-Door, F57 Convertible, F60 Countryman) — transverse B48 only.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every B48 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b48\"\u003eStage 2 Kit — B48\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Catless — Brush Finish","offer_id":43280674553917,"sku":"EW-EXH-ER-B48MINI-CATLESS","price":615.0,"currency_code":"USD","in_stock":true},{"title":"Catless — SwainTech White Lightning","offer_id":43280674586685,"sku":"EW-EXH-ER-B48MINI-CATLESS-CER","price":865.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — Brush Finish","offer_id":43280674619453,"sku":"EW-EXH-ER-B48MINI-CAT","price":965.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — SwainTech White Lightning","offer_id":43280674652221,"sku":"EW-EXH-ER-B48MINI-CAT-CER","price":1215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-b48-mini-downpipe-01.webp?v=1781743118"},{"product_id":"er-b48-bmw-downpipe","title":"Evolution Racewerks Competition Downpipe — B48 BMW (F-Series + G-Series)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series 4\" downpipe for B48 BMW applications.\u003c\/strong\u003e Replaces the OEM cat-and-downpipe section that BMW deliberately specifies for emissions compliance — and that becomes the post-turbo flow limit on Stage 2+ calibrations. Fits the listed F-series and G-series B48 platforms; confirm your chassis in the fitment list below.\u003c\/p\u003e\n\n\u003ch3\u003eWhy a downpipe matters at Stage 2 and above\u003c\/h3\u003e\n\u003cp\u003eThe OEM B48 downpipe is calibrated for stock boost. At Stage 2 boost it becomes the limiting factor on turbo response — exhaust can't evacuate fast enough behind the turbine, the turbine wheel sees elevated back-pressure, and spool gets soft. Replacing the downpipe takes that restriction off the table, which is why it is standard on any serious B48 build.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs High-Flow Catted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless:\u003c\/strong\u003e race-only, maximum flow. CEL on stock cal — Esse Werks Stage 2\/3 calibrations clear monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Flow Catted:\u003c\/strong\u003e 200-cell metallic cat in line. CEL-clean on stock cal. Daily-driver friendly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW B48 applications across the F-series and G-series 2\/3\/4\/5 Series, X1, X2, X3, X4, and Z4. Confirm your exact chassis code in the selector — the part is sourced to match your platform.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every B48 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b48\"\u003eStage 2 Kit — B48\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Catless — Brush Finish","offer_id":43280674717757,"sku":"EW-EXH-ER-B48BMW-CATLESS","price":615.0,"currency_code":"USD","in_stock":true},{"title":"Catless — SwainTech White Lightning","offer_id":43280674750525,"sku":"EW-EXH-ER-B48BMW-CATLESS-CER","price":865.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — Brush Finish","offer_id":43280674783293,"sku":"EW-EXH-ER-B48BMW-CAT","price":965.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — SwainTech White Lightning","offer_id":43280674816061,"sku":"EW-EXH-ER-B48BMW-CAT-CER","price":1215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-b48-bmw-downpipe-01.webp?v=1781743119"},{"product_id":"er-b58-downpipe","title":"Evolution Racewerks Competition Series 4.5\" Catless Downpipe — B58","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks 4.5\" Competition Series catless downpipe for the B58 inline-six.\u003c\/strong\u003e Three finish options. The B58 makes meaningfully more exhaust mass-flow than the B48 at the same boost level — 4.5\" is the size ER engineered specifically to match the B58's 4.5\" turbine housing outlet without creating a \"step\" transition that causes back-pressure.\u003c\/p\u003e\n\n\u003ch3\u003eWhy 4.5\" specifically\u003c\/h3\u003e\n\u003cp\u003eER's note from their own product page: \"The new turbochargers on the B58 engines utilize a much larger 4.5\" outlet compared to the 4\" outlet on the older N55 engines. If we ran a 4\" downpipe flange inlet so we can use 4\" tubing, a 'step' would be formed between the turbocharger outlet and downpipe inlet. Exhaust gas would hit this step and turbulence would form, causing back-pressure close to the turbocharger.\" ER had to source 4.5\" stainless tubing specifically — not commonly available — to keep the inlet seamless.\u003c\/p\u003e\n\n\u003ch3\u003eThree finish options\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBrush Finish (standard):\u003c\/strong\u003e ER's default. Matte stainless appearance, ages cleanly under engine bay heat cycling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolish Finish:\u003c\/strong\u003e mirror-polished stainless. Shows in the engine bay; preferred by show-build customers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwainTech White Lightning:\u003c\/strong\u003e our signature white ceramic thermal coating — details below.\u003c\/p\u003e\n\n\u003ch3\u003eCatless reality\u003c\/h3\u003e\n\u003cp\u003eAll three finish variants are catless construction (no catalytic material). Race use only. Triggers CEL on stock calibration — Esse Werks Stage 2 \/ 3 calibrations clear rear O2 monitoring. The catted variant from ER's catalog is a separate ER product (the Sports Series 4\" catted, which uses 4\" tubing rather than 4.5\") — contact us for catted B58 sourcing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eFree shipping in the continental US on orders over $100 from Evolution Racewerks (we pass that through — no shipping markup from us)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eAll B58 BMW applications — M240i, M340i (incl. Touring), M440i, Z4 M40i, X3 M40i, X4 M40i, X5 40i, X6 40i, X7 40i, 540i (incl. Touring), 740i, 840i, plus legacy F-chassis M235i (B58), 340i, 440i.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every B58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280677699645,"sku":"EW-EXH-ER-B58-BRUSH","price":675.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280677732413,"sku":"EW-EXH-ER-B58-POLISH","price":725.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280677765181,"sku":"EW-EXH-ER-B58-CERAMIC","price":925.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-b58-downpipe-01.webp?v=1781743118"},{"product_id":"er-n55-downpipe","title":"Evolution Racewerks 4\" Downpipe — N55 (F-Chassis)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks 4\" downpipe for the single-turbo N55.\u003c\/strong\u003e The N55 is the bridge engine between the older twin-turbo I6 and the modern B58. Smaller exhaust mass-flow than either, but the OEM downpipe restriction still caps Stage 2 + 3 N55 builds at peak power. ER's 4\" replacement opens that restriction completely.\u003c\/p\u003e\n\n\u003ch3\u003eN55 single-turbo math\u003c\/h3\u003e\n\u003cp\u003eThe N55 uses a single twin-scroll turbo. One downpipe to replace (not the twin setup of the S55). ER's 4\" pipe handles the N55's airflow ceiling cleanly through Stage 3 on a supporting-hardware build.\u003c\/p\u003e\n\n\u003ch3\u003eReal-world output difference\u003c\/h3\u003e\n\u003cp\u003eCommunity feedback on calibrated N55 builds consistently reports a measurable gain from the downpipe alone — the pipe removes a restriction the OEM section imposes for noise and emissions compliance, which the tune can then capitalize on.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs Catted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless:\u003c\/strong\u003e race-only, maximum flow. CEL on stock cal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Flow Catted:\u003c\/strong\u003e 200-cell metallic catalyst. CEL-clean on stock cal.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eAll N55 BMW applications — F20\/F21 M135i, F22\/F23 M235i (2014-2016 N55), F30 335i (2012-2015), F31 335i Touring, F32 435i (2014-2016), F33 435i, F36 435i, F87 M2 (2016-2018 pre-Competition).\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every N55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Catless — Brush Finish","offer_id":43280679534653,"sku":"EW-EXH-ER-N55-CATLESS","price":615.0,"currency_code":"USD","in_stock":true},{"title":"Catless — SwainTech White Lightning","offer_id":43280679567421,"sku":"EW-EXH-ER-N55-CATLESS-CER","price":865.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — Brush Finish","offer_id":43280679600189,"sku":"EW-EXH-ER-N55-CAT","price":965.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — SwainTech White Lightning","offer_id":43280679632957,"sku":"EW-EXH-ER-N55-CAT-CER","price":1215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-n55-downpipe-01.webp?v=1781743119"},{"product_id":"er-comp-catless-dp-s55","title":"ER Competition Series Catless Downpipes — S55","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series twin downpipes for the S55 — F80 M3, F82 M4, F83 M4 Convertible, F87 M2 Competition.\u003c\/strong\u003e Twin 3.5\" mandrel-bent T304 stainless pipes — one per turbo. The largest downpipe section in ER's catalog for a reason: the S55 makes meaningful exhaust flow that the OEM downpipes deliberately restrict for noise compliance.\u003c\/p\u003e\n\n\u003ch3\u003eThe S55 and downpipes\u003c\/h3\u003e\n\u003cp\u003eThe OEM S55 downpipes are restrictive enough that even un-tuned M3\/M4 owners commonly report a meaningful difference from a downpipe alone. On Stage 2 and Stage 3 builds, OEM downpipes become the single biggest exhaust restriction — replacing them is standard for any serious F8X tune.\u003c\/p\u003e\n\n\u003ch3\u003eFor the F87 M2 Competition specifically\u003c\/h3\u003e\n\u003cp\u003eSame engine as the M3\/M4 but in a smaller chassis with slightly different exhaust routing. These downpipes drop post-turbo back-pressure to the level the S55's wastegate strategy expects, sharpening throttle response across the rev range.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs Catted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless:\u003c\/strong\u003e race-only, twin 3.5\" pipes, no cat material. CEL on stock cal — Esse Werks Stage 2\/3 calibrations clear it. Standard choice for track-driven F8X builds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Flow Catted:\u003c\/strong\u003e 200-cell metallic cats in both pipes. CEL-clean on stock cal. Community-observed flow sits close to the catless pipes for street and most track use.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS55 twin-turbo applications — F80 M3, F82 M4, F83 M4 Convertible, F87 M2 Competition (2018-2021).\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side Core of every S55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s55\"\u003eStage 2 Kit — S55\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Catless — Brush Finish","offer_id":43280681861181,"sku":"EW-EXH-ER-S55-CATLESS","price":1415.0,"currency_code":"USD","in_stock":true},{"title":"Catless — SwainTech White Lightning","offer_id":43280681893949,"sku":"EW-EXH-ER-S55-CATLESS-CER","price":1665.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — Brush Finish","offer_id":43280681926717,"sku":"EW-EXH-ER-S55-CAT","price":1765.0,"currency_code":"USD","in_stock":true},{"title":"High-Flow Catted — SwainTech White Lightning","offer_id":43280681959485,"sku":"EW-EXH-ER-S55-CAT-CER","price":2015.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/ER__competition-series-catless-downpipes-2015-20-m2-competition-m3-m4-s55-engine_01.webp?v=1781743119"},{"product_id":"er-s58-g80-g82-mid-pipes","title":"Evolution Racewerks Competition Series Mid Pipes — S58 G80 M3 \/ G82 M4 \/ G83 M4 Conv","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series mid pipes for the S58 in G80 M3, G82 M4, and G83 M4 Convertible.\u003c\/strong\u003e The S58's catalytic converters sit in the downpipe section (we offer those separately as catless or high-flow catted downpipes). This product is the mid-pipe: 3\" mandrel-bent T304 stainless replacing the OEM resonator-and-mid-pipe assembly. It deletes the resonators — the main restriction in the OEM mid section — and opens the flow path to the cat-back. Downpipe and mid-pipe are separate, complementary upgrades.\u003c\/p\u003e\n\n\u003ch3\u003eH-crossover (not X)\u003c\/h3\u003e\n\u003cp\u003eER deliberately specified an \"H\" style crossover instead of \"X\" — their testing showed the H-crossover reduces drone and improves low-end torque versus X-crossover designs. The OEM mid pipe also uses H-crossover; ER preserved that architecture choice. Result: aggressive exhaust note across the rev range, no drone at cruise.\u003c\/p\u003e\n\n\u003ch3\u003eAudible change\u003c\/h3\u003e\n\u003cp\u003eSignificant — the OEM resonators do a lot of the S58's exhaust note management. With them removed, the engine note is noticeably more aggressive at all RPM bands. Driver experience changes; neighbors notice when you start the car.\u003c\/p\u003e\n\n\u003ch3\u003eShipping note\u003c\/h3\u003e\n\u003cp\u003eThe full 1-piece mid pipe exceeds UPS\/FedEx ground size limits — ER offers it in a 3-piece design for ground shipping (the standard option). Full 1-piece is available by truck freight (significantly higher shipping cost). We default to the 3-piece for UPS\/FedEx ground unless you specifically request the 1-piece.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eFree shipping in the continental US on orders over $100 from Evolution Racewerks (we pass that through — no shipping markup from us)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 sedan\/coupe\/convertible — G80 M3, G82 M4, G83 M4 Convertible (Competition, Competition xDrive, base, CS).\u003c\/p\u003e\n\u003cp\u003eThis part is the mid-pipe-side core of every S58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280681992253,"sku":"EW-EXH-ER-S58-G8X","price":1415.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280682025021,"sku":"EW-EXH-ER-S58-G8X-CER","price":1665.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-s58-g87-m2-mid-pipes-01.webp?v=1781743118"},{"product_id":"er-s58-g87-m2-mid-pipes","title":"Evolution Racewerks Competition Series Mid Pipes — S58 G87 M2","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series mid pipes for the S58 in the G87 M2 chassis.\u003c\/strong\u003e Same engine as the G80 M3 and G82 M4 — but the M2's shorter wheelbase and tighter chassis packaging required ER to engineer a chassis-specific mid pipe routing. 3\" mandrel-bent T304 stainless, H-crossover design, replaces the OEM resonator-and-mid-pipe assembly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's different about the G87 specifically\u003c\/h3\u003e\n\u003cp\u003eThe G87 M2 shares the S58 powertrain with the M3\/M4 but the chassis exhaust path is shorter (~12\" less mid-pipe length). The mid pipe geometry is different — same construction philosophy, different fitment. Not interchangeable with the G80\/G82 mid pipes.\u003c\/p\u003e\n\n\u003ch3\u003eH-crossover\u003c\/h3\u003e\n\u003cp\u003eSame H-style crossover design as the G80\/G82 mid pipe — ER's testing settled on H over X for drone reduction and low-end torque. Preserves the OEM crossover architecture choice while opening the flow path.\u003c\/p\u003e\n\n\u003ch3\u003eAudible change\u003c\/h3\u003e\n\u003cp\u003eAggressive without drone at cruise. The G87 M2's smaller chassis amplifies the note slightly more than the M3\/M4 chassis does — the engine bay sits closer to the cabin, the cabin sits closer to the rear muffler. Most G87 owners report it's exactly the volume they wanted from the M2.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eFree shipping in the continental US on orders over $100 from Evolution Racewerks (we pass that through — no shipping markup from us)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 in G87 M2 chassis (2023+).\u003c\/p\u003e\n\u003cp\u003eThis part is the mid-pipe-side core of every S58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280684351549,"sku":"EW-EXH-ER-S58-G87","price":1305.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280684384317,"sku":"EW-EXH-ER-S58-G87-CER","price":1555.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-s58-g87-m2-mid-pipes-01.webp?v=1781743118"},{"product_id":"er-s58-x3m-x4m-mid-pipes","title":"Evolution Racewerks Competition Series Mid Pipes — S58 F97 X3 M \/ F98 X4 M","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series mid pipes for the S58 in the F97 X3 M and F98 X4 M SUVs.\u003c\/strong\u003e The SUV chassis routes exhaust through a longer overall path than the M3\/M4 sedan\/coupe — different mounting points, different chassis tunnel clearances. ER engineered a chassis-specific mid pipe for this application. 3\" mandrel-bent T304 stainless, H-crossover, lifetime warranty.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's different about the X3M\/X4M chassis\u003c\/h3\u003e\n\u003cp\u003eThe SUV body sits taller — the exhaust system runs through a chassis tunnel that's geometrically different from the M3\/M4 sedan. Mid pipe length is approximately 8\" longer than the G80\/G82 version, with different hanger mounting points and different cross-member clearance. Not interchangeable with any other S58 application.\u003c\/p\u003e\n\n\u003ch3\u003eThe performance SUV use case\u003c\/h3\u003e\n\u003cp\u003eF97 X3 M and F98 X4 M owners using these mid pipes are typically running Stage 2+ calibration (strong gains) in a 4,500 lb SUV chassis. The exhaust note change is most aggressive of any S58 application because the SUV body has more interior cabin volume to amplify the note. Reads as a track-truck rather than a sedan.\u003c\/p\u003e\n\n\u003ch3\u003eH-crossover\u003c\/h3\u003e\n\u003cp\u003eSame architecture as the G80\/G82 and G87 variants — H crossover for drone reduction and low-end torque retention, deletes OEM resonators for flow.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e100% 304-grade stainless steel construction\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent piping — smooth transitions, no flow restrictions at the bends\u003c\/li\u003e\n  \u003cli\u003e100% TIG-welded by ER's in-house fabricators\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC-machined flanges (billet 304 stainless)\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — manufactured in-house at ER's California facility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty\u003c\/strong\u003e against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eFree shipping in the continental US on orders over $100 from Evolution Racewerks (we pass that through — no shipping markup from us)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEGT bung included — standard on every Esse Werks ER order\u003c\/h3\u003e\n\u003cp\u003eEvolution Racewerks offers the EGT (Exhaust Gas Temperature) sensor bung as an optional add-on on their direct catalog. \u003cstrong\u003eWe include it on every ER downpipe \/ mid pipe we ship — no upcharge.\u003c\/strong\u003e Comes pre-installed with a 1\/8\" NPT plug so you don't need to run the EGT sensor immediately. When you're ready to add EGT monitoring to your build (recommended at Stage 2 and above for any sustained-load driving), the bung is already there.\u003c\/p\u003e\n\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not for sale, installation, or use on licensed vehicles in the State of California.\u003c\/strong\u003e 49-state product. Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003e~3-4 hours at a competent shop. Reuses OEM hardware where applicable. Includes all hardware for complete installation.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 in F97 X3 M and F98 X4 M chassis (Competition variants).\u003c\/p\u003e\n\u003cp\u003eThis part is the mid-pipe-side core of every S58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280684417085,"sku":"EW-EXH-ER-S58-X3M-X4M","price":1535.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280684449853,"sku":"EW-EXH-ER-S58-X3M-X4M-CER","price":1785.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-s58-x3m-x4m-mid-pipes-01.webp?v=1781743119"},{"product_id":"er-comp-catless-dp-s58","title":"Evolution Racewerks Competition Series Catless Downpipes — S58 (G80 M3 \/ G82 M4 \/ G87 M2)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series catless downpipes for the twin-turbo S58 — G80 M3, G82 M4, and G87 M2.\u003c\/strong\u003e The S58's primary catalytic converters live in the downpipe section, and on a tuned car they are the biggest post-turbo restriction. These replace both downpipes with straight, catless 3\" stainless.\u003c\/p\u003e\n\u003ch3\u003eWhy a downpipe on the S58\u003c\/h3\u003e\n\u003cp\u003eAt Stage 2 boost the factory cats cap how fast exhaust can leave the turbines. Removing them drops post-turbo backpressure, tightens spool, and lets an Esse Werks calibration use the airflow the engine can actually move.\u003c\/p\u003e\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMandrel-bent 3\" piping, 100% T304 stainless steel\u003c\/li\u003e\n\u003cli\u003eCNC-machined billet 304 stainless V-band turbo flange (matches the factory 3.5\" V-band)\u003c\/li\u003e\n\u003cli\u003eRetains the factory O2 sensor location and factory donut connection — bolt-on\u003c\/li\u003e\n\u003cli\u003e100% TIG-welded; made in the USA at Evolution Racewerks' California facility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eBrush, Polish, or our signature \u003cstrong\u003eSwainTech White Lightning\u003c\/strong\u003e ceramic coating — choose above.\u003c\/p\u003e\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\u003ch3\u003eFull S58 exhaust path\u003c\/h3\u003e\n\u003cp\u003eDownpipes, mid-pipe, and crossover each replace a different section — pair them for a complete S58 exhaust. The catted Sports Series downpipe is the street, CEL-clean alternative to this catless version.\u003c\/p\u003e\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003eThis is a race\/competition part. Not for sale, installation, or use on pollution-controlled vehicles in California — 49-state product; a Vehicle Compliance Waiver is signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eTwin-turbo S58 — G80 M3, G82 M4, G87 M2 (2021+ M3\/M4, 2023+ M2). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side core of every S58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280701751357,"sku":"BM-EXH028S","price":1285.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280701784125,"sku":"BM-EXH028P","price":1385.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280701816893,"sku":"BM-EXH028TB","price":1535.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/ER__competition-series-catless-downpipes-m2-m3-m4-s58-engine_01.webp?v=1781743119"},{"product_id":"er-sport-catted-dp-s58","title":"Evolution Racewerks Sports Series High-Flow Catted Downpipes — S58 (G80 M3 \/ G82 M4 \/ G87 M2)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Sports Series high-flow catted downpipes for the twin-turbo S58 — G80 M3, G82 M4, and G87 M2.\u003c\/strong\u003e These replace the restrictive factory primary cats with high-flow 200-cell metallic catalysts — most of the flow of a catless pipe while keeping a catalyst in the system.\u003c\/p\u003e\n\u003ch3\u003eCatted vs catless\u003c\/h3\u003e\n\u003cp\u003eThe 200-cell metallic cats clear emissions monitoring on the stock calibration (no check-engine light) and keep the car street-civil, where the catless Competition downpipes are race-only and trigger a CEL until the tune clears it. For most street-driven S58 builds the catted pipe is the daily-friendly choice.\u003c\/p\u003e\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMandrel-bent 3\" piping, 100% T304 stainless steel\u003c\/li\u003e\n\u003cli\u003eHigh-flow 200-cell metallic catalytic converters\u003c\/li\u003e\n\u003cli\u003eCNC-machined billet 304 stainless V-band turbo flange (factory 3.5\" V-band); retains factory O2 location — bolt-on\u003c\/li\u003e\n\u003cli\u003e100% TIG-welded; made in the USA at Evolution Racewerks' California facility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eBrush, Polish, or our signature \u003cstrong\u003eSwainTech White Lightning\u003c\/strong\u003e ceramic coating — choose above.\u003c\/p\u003e\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\u003ch3\u003eFull S58 exhaust path\u003c\/h3\u003e\n\u003cp\u003ePair with the Evolution Racewerks S58 mid-pipe and crossover for a complete exhaust. The catless Competition downpipe is the race alternative to this catted version.\u003c\/p\u003e\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003eSold for off-road\/competition use. Not for sale, installation, or use on pollution-controlled vehicles in California — 49-state product; Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eTwin-turbo S58 — G80 M3, G82 M4, G87 M2 (2021+ M3\/M4, 2023+ M2). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280701849661,"sku":"BM-EXH028SCAT","price":2335.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280701882429,"sku":"BM-EXH028PCAT","price":2435.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280701915197,"sku":"BM-EXH028TBCAT","price":2585.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Gemini_Generated_Image_bz3c8ebz3c8ebz3c.png?v=1781743119"},{"product_id":"er-crossover-pipe-s58","title":"Evolution Racewerks Crossover Pipe — S58 (G80 M3 \/ G82 M4 \/ G87 M2)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks crossover pipe for the twin-turbo S58 — G80 M3, G82 M4, and G87 M2.\u003c\/strong\u003e The crossover is the under-transmission section that ties the downpipe side into the mid-pipe. The factory part is squeezed into an oval for clearance and uses heavy cast sections, which adds turbulence and weight.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eMandrel-bent 3\" piping kept full-round for a smoother path, 100% T304 stainless, CNC-machined billet 304 stainless flanges, 100% TIG-welded. Bolt-on, and lighter than the cast factory assembly. Made in the USA at Evolution Racewerks' California facility.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eBrush, Polish, or our signature \u003cstrong\u003eSwainTech White Lightning\u003c\/strong\u003e ceramic coating — choose above.\u003c\/p\u003e\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\u003ch3\u003eWhere it sits in the system\u003c\/h3\u003e\n\u003cp\u003eThe crossover is one section of the S58 exhaust path: downpipes → crossover → mid-pipe. It carries no catalyst and is sold as part of a competition exhaust system; pair it with the Evolution Racewerks S58 downpipes and mid-pipe for the full run.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eTwin-turbo S58 — G80 M3, G82 M4, G87 M2 (2021+ M3\/M4, 2023+ M2). Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280701947965,"sku":"BM-EXH028S-CR","price":505.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280701980733,"sku":"BM-EXH028P-CR","price":555.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280702013501,"sku":"BM-EXH028TB-CR","price":755.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/er-crossover-pipe-s58-01.webp?v=1781743118"},{"product_id":"aa-downpipe-n20-n26","title":"Active Autowerke Downpipe — N20 \/ N26","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke catted downpipe for the N20 \/ N26 — the post-turbo restriction, opened.\u003c\/strong\u003e The factory downpipe and dense cat choke spool and flow on the gating part of the exhaust. Active Autowerke's replacement clears it while keeping a high-flow catalytic converter in the pipe — the street-friendly route to a Stage 2 calibration.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003e3.5\" 304 stainless with a 4\" GESI G-Sport High Output (HO-Series Gen 2) catalytic converter — 304 stainless through the substrate, EPA-registered and 49-state \/ OBD2 compliant, engineered not to throw a check-engine light. Not legal in California.\u003c\/p\u003e\n\u003ch3\u003eEngine-matched — enter your VIN\u003c\/h3\u003e\n\u003cp\u003eThe N20 and N26 use different downpipes that do not interchange. Add your VIN at checkout and we match and ship the correct unit for your car.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eThe downpipe is the gateway to Stage 2 on the N20\/N26 — and we build the calibration around it.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N20 \/ N26 — 228i (F22\/F23), 328i (F30\/F31), 428i (F32\/F33\/F36), 2012 and up. Confirm your chassis in the selector; we VIN-match the correct N20 vs N26 unit.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280702406717,"sku":"11-079","price":1835.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Gemini_Generated_Image_hrgjx6hrgjx6hrgj.png?v=1781743119"},{"product_id":"aa-signature-downpipe-n55","title":"Active Autowerke Signature Downpipe — N55","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke catted downpipe for the N55 — the gating restriction opened, without going catless.\u003c\/strong\u003e Clears the factory downpipe\/cat choke point while keeping a high-flow converter in the pipe — the street-friendly path into Stage 2.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003e3.5\" 304 stainless with a 4.5\" GESI G-Sport Ultra High Output catalytic converter — full stainless through the substrate, EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an N55 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 — M235i (F22\/F23), 335i (F30\/F31), 435i (F32\/F33\/F36), and F87 M2, 2014 and up. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280702439485,"sku":"11-040","price":1805.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/AA_f3x_f87-catted-downpipe_01.webp?v=1781743118"},{"product_id":"er-comp-catless-dp-n55-x5x6","title":"Evolution Racewerks Competition Series 4\" Catless Downpipe — N55 (X5 \/ X6)","description":"\u003cp\u003e\u003cstrong\u003eEvolution Racewerks Competition Series 4\" catless downpipe for the single-turbo N55 in the X5 35i and X6 35i (F15\/F16).\u003c\/strong\u003e Replaces the factory downpipe and catalytic converter — the post-turbo restriction that caps a tuned N55 — with a mandrel-bent 4\" stainless pipe.\u003c\/p\u003e\n\u003ch3\u003eWhy a downpipe on the N55\u003c\/h3\u003e\n\u003cp\u003eThe factory downpipe is built around the cat for emissions, and at Stage 2 boost it becomes the limiting factor on spool and top-end. Opening it to a full 4\" lets an Esse Werks calibration use the turbo's real airflow ceiling.\u003c\/p\u003e\n\u003ch3\u003eWhat Evolution Racewerks builds in\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMandrel-bent 4\" piping (expanded from the factory 3.5\" turbo outlet), 100% T304 stainless\u003c\/li\u003e\n\u003cli\u003eCNC-machined billet 304 stainless V-band turbo flange (factory 3.5\" V-band)\u003c\/li\u003e\n\u003cli\u003e100% stainless-steel flex section for driveline movement\u003c\/li\u003e\n\u003cli\u003e100% TIG-welded; made in the USA at Evolution Racewerks' California facility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eBrush, Polish, or our signature \u003cstrong\u003eSwainTech White Lightning\u003c\/strong\u003e ceramic coating — choose above.\u003c\/p\u003e\n\u003ch3\u003eSwainTech White Lightning — our signature coating\u003c\/h3\u003e\n\u003cp\u003eWhen we coat a part, we use one coating: SwainTech White Lightning — a true ceramic thermal barrier applied about 0.015\" thick (versus roughly 0.002\" for paint-style \"ceramic\" finishes) and sprayed molten so it bonds to the metal instead of sitting on top. It cuts radiant heat off the exhaust by roughly 35–55%, dropping underhood and intake temperatures, and keeps heat inside the pipe where it sustains exhaust velocity and scavenging. And it's white — a deliberate signature in a market that otherwise all looks the same in black. Select it above.\u003c\/p\u003e\n\u003ch3\u003eCalifornia restriction\u003c\/h3\u003e\n\u003cp\u003eRace\/competition part. Not for sale, installation, or use on pollution-controlled vehicles in California — 49-state product; Vehicle Compliance Waiver signed at order intake. International orders ship without restriction.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW N55 — X5 35i and X6 35i (F15\/F16). Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis part is the downpipe-side core of every N55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-n55\"\u003eStage 2 Kit — N55\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Evolution Racewerks","offers":[{"title":"Brush Finish","offer_id":43280703422525,"sku":"BM-EXH-N55-X5X6","price":765.0,"currency_code":"USD","in_stock":true},{"title":"Polish Finish","offer_id":43280703455293,"sku":"BM-EXH-N55-X5X6-P","price":815.0,"currency_code":"USD","in_stock":true},{"title":"SwainTech White Lightning","offer_id":43280703488061,"sku":"BM-EXH-N55-X5X6-CER","price":1015.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/ER__competition-series-4-catless-downpipe-for-the-x5-x6-series-n55-6-cylinder-engine__01.webp?v=1781743118"},{"product_id":"aa-signature-downpipe-b58","title":"Active Autowerke Signature Downpipe — B58","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke catted downpipe for the B58 — a big-bore, street-legal-equipment Stage 2 gateway.\u003c\/strong\u003e Opens the gating restriction while keeping a high-flow cat in the pipe.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eGenerously sized: 4.5\" stainless tapering to 3.5\" through a stainless flex joint, then to 80mm to meet the OEM system — never below the factory 80mm. 4.5\" GESI G-Sport Ultra High Output cat (EPA-registered, 49-state \/ OBD2, no CEL; not CARB). Ships with the turbo flange gasket.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of a B58 Stage 2 build; we calibrate around it. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e bundles parts + tune for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW B58 (single-turbo, 2024 \u0026amp; earlier) — M240i (F22\/G42), 340i \/ M340i (F30\/G20), 440i \/ M440i (F32\/G22), Z4 M40i (G29). Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280704208957,"sku":"11-AA-B58","price":1805.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/aa-g20-b58-catted-downpipe_01.webp?v=1781743119"},{"product_id":"aa-downpipe-s55","title":"Active Autowerke Downpipes w\/ GESI Cats — S55","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke GESI-catted downpipes for the S55 — F80 M3, F82\/F83 M4, F87 M2 Competition.\u003c\/strong\u003e Clears the factory restriction on both turbos while keeping high-flow cats in the pipes.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eHand-built 304 stainless, TIG-welded, with a casted upper V-band for precise fitment and a pair of 4\" GESI G-Sport High Output (Gen 2) catalytic converters — rated for 500–850 hp, EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an S55 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-s55\"\u003eStage 2 Kit — S55\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S55 — F80 M3, F82 M4, F83 M4 Convertible, F87 M2 Competition. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280704241725,"sku":"11-080","price":3515.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/aa-downpipe-s55-gesi-01.webp?v=1781743119"},{"product_id":"aa-signature-downpipe-s58","title":"Active Autowerke Signature Downpipes w\/ GESI Cat — S58","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke Signature GESI-catted downpipes for the S58 — G8x M3 \/ M4 \/ M2.\u003c\/strong\u003e The first step of the S58 exhaust and the downpipe-side core of a Stage 2 build.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eTIG-welded 304 stainless with stainless flex joints and a casted upper V-band; 3\" piping that never drops below the factory 70mm, with a pair of 4.5\" GESI G-Sport Ultra High Output catalytic converters — EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an S58 Stage 2 build; we calibrate around it. The \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e bundles parts + tune for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S58 — G80\/G81 M3, G82\/G83 M4, G87 M2. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280704274493,"sku":"11-085","price":3665.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Gemini_Generated_Image_trvc55trvc55trvc.png?v=1781743118"},{"product_id":"aa-downpipes-s63-f10m5-f12m6","title":"Active Autowerke Downpipes — S63 (F10 M5 \/ F12 M6)","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke GESI-catted downpipes for the S63 — F10 M5 and F1x M6.\u003c\/strong\u003e Opens the twin-turbo V8's gating restriction while keeping high-flow cats in the pipes.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eHand-built 304 stainless, meticulously TIG-welded, with full 3\" piping routed with the fewest bends possible and a pair of 4.5\" GESI G-Sport Ultra High Output catalytic converters — EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an S63 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-s63\"\u003eStage 2 Kit — S63\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S63 (twin-turbo V8) — F10 M5, F06\/F12\/F13 M6. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted","offer_id":43280704307261,"sku":"11-AA-S63-F10","price":3499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Active_Autowerke_Downpipes_01.webp?v=1781743119"},{"product_id":"aa-downpipes-s63-x5mx6m","title":"Active Autowerke GESI Catted Downpipes — S63 (X5M\/X6M)","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke GESI-catted downpipes for the S63 — F85 X5 M and F86 X6 M.\u003c\/strong\u003e Clears the twin-turbo V8's factory restriction while keeping high-flow cats in the pipes.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eHand-built 304 stainless, TIG-welded, with full 3\" piping and a pair of 4.5\" GESI G-Sport Ultra High Output catalytic converters — EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an S63 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-s63\"\u003eStage 2 Kit — S63\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S63 — F85 X5 M, F86 X6 M. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280704340029,"sku":"11-AA-S63-X5M","price":3665.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Active_Autowerke_Downpipes_01_df876343-3ee8-4aee-89e3-6e5c917140e0.webp?v=1781743119"},{"product_id":"aa-downpipes-s63-f90","title":"Active Autowerke Downpipes — S63 (F90 M5\/M8, F95 X5M, F96 X6M)","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke GESI-catted downpipes for the S63TU — F90 M5\/M8, F95 X5 M, F96 X6 M.\u003c\/strong\u003e Opens the twin-turbo V8's gating restriction while keeping high-flow cats in the pipes.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eBuilt in-house from 304 stainless, TIG-welded, with a factory-matched 3.5\" V-band inlet tapering into a mandrel-bent body — and the lower section others sell separately as a mid-pipe is included. Routed to retain the OEM O2 heat shield, so the bay stays factory-clean. A pair of 4.5\" GESI G-Sport Ultra High Output catalytic converters — EPA-registered, 49-state \/ OBD2, no CEL. Not California-legal.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eDownpipe-side core of an S63 Stage 2 build; we tune around it. The \u003ca href=\"\/products\/stage-2-kit-s63\"\u003eStage 2 Kit — S63\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S63TU — F90 M5\/M8, F95 X5 M, F96 X6 M. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted (GESI)","offer_id":43280709779517,"sku":"11-063","price":3485.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Active_Autowerke_Downpipes_01.webp?v=1781743119"},{"product_id":"aa-midpipe-s58-equal-length","title":"Active Autowerke Signature Equal-Length Mid-Pipe w\/ G-Brace — S58","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke Signature equal-length mid-pipe with G-brace for the S58 — G80 M3, G82 M4.\u003c\/strong\u003e The factory mid-pipe leaves the two cylinder banks unequal in length, so the straight-six's pulses arrive out of step — the source of the S58's rasp. This corrects it.\u003c\/p\u003e\n\u003ch3\u003eThe design\u003c\/h3\u003e\n\u003cp\u003eA patented equal-length design (US 11,248,511; EU\/UK 3,882,441) that matches both banks for a smooth, cohesive straight-six tone. This Gen 2 adds resonators that strip the rasp, cut the 2,000-rpm drone, and quiet the cold-start rattle. 100% 304 brushed stainless.\u003c\/p\u003e\n\u003ch3\u003eG-brace included\u003c\/h3\u003e\n\u003cp\u003eShips with Active Autowerke's G-brace, which restores transmission-tunnel rigidity once the factory mid-section is removed.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eSits between the S58 downpipes and the rear exhaust. Off-road \/ race use only.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S58 — G80 M3, G82 M4 (incl. Competition). Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":43280709812285,"sku":"AA-MP-S58-EL","price":2065.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/AA_Sig_Equal_Midpipe_Brace_01.webp?v=1781743119"},{"product_id":"aa-midpipe-s58-single-x","title":"Active Autowerke Signature X-Pipe Mid-Pipe — S58 (G80 M3 \/ G82 M4)","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke Signature X-pipe mid-pipe for the S58 — G80 M3, G82 M4.\u003c\/strong\u003e A true crossover (X) section between the downpipes and the rear exhaust — it scavenges across the banks for a deeper, fuller tone and strong flow.\u003c\/p\u003e\n\u003ch3\u003eThe design\u003c\/h3\u003e\n\u003cp\u003eAn X-pipe crossover in 304 stainless. Run it straight-through for maximum volume and flow, or with secondary cats to take the edge off the volume and clean up the tone. It's the rowdier counterpart to our equal-length mid-pipe — deeper and louder; the equal-length is the pick for a smoother, more refined note.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eSits between the S58 downpipes and the rear exhaust. Off-road \/ race use only.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S58 — G80 M3, G82 M4. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":43280709845053,"sku":"AA-MP-S58-X","price":1725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/AA_G80_Sig_Xpipe_Midpipe_01.webp?v=1781743118"},{"product_id":"aa-midpipe-s55-equal-length","title":"Active Autowerke Equal-Length Mid-Pipe — S55","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke equal-length mid-pipe for the S55 — F80 M3, F82\/F83 M4.\u003c\/strong\u003e The S55's factory down-pipe lengths differ between banks by nearly a foot and a half, spacing the exhaust pulses unevenly — the root of the rasp. This corrects it.\u003c\/p\u003e\n\u003ch3\u003eThe design\u003c\/h3\u003e\n\u003cp\u003eA patented equal-length design (US 11,248,511; EU\/UK 3,882,441) that matches both banks for a smooth, cohesive straight-six tone. This is the Gen 2 (it replaced the original, no longer made) with resonators that strip the rasp and cut the 2,000-rpm drone. 304 stainless, and it includes Active Autowerke's F-brace to restore tunnel rigidity once the factory mid-section is out.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eSits between the S55 downpipes and the rear exhaust. Off-road \/ race use only.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S55 — F80 M3, F82 M4, F83 M4 Convertible. (F87 M2 Competition uses a separate mid-pipe.) Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":43280709877821,"sku":"AA-MP-S55-EL","price":1915.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Gemini_Generated_Image_swyrupswyrupswyr.png?v=1781742887"},{"product_id":"aa-midpipe-s58-single","title":"Active Autowerke Signature Single Mid-Pipe — S58 (G80 M3 \/ G82 M4)","description":"\u003cp\u003e\u003cstrong\u003eActive Autowerke Signature single (merge) mid-pipe for the S58 — G80 M3, G82 M4.\u003c\/strong\u003e Merges the two banks into one large-diameter pipe right after the downpipes — maximum flow and the deepest, most aggressive tone in the S58 mid-pipe lineup.\u003c\/p\u003e\n\u003ch3\u003eThe design\u003c\/h3\u003e\n\u003cp\u003eA single large-bore merge in 304 stainless, with the G-brace to restore tunnel rigidity once the factory mid-section is out. Louder and deeper than the X-pipe or the equal-length — the choice when you want the car to sound unmistakably built. (No secondary-cat option on the single-merge.)\u003c\/p\u003e\n\u003ch3\u003eChoosing your mid-pipe\u003c\/h3\u003e\n\u003cp\u003eEqual-length = smoothest and most refined; X-pipe = deeper, with an optional secondary-cat version; single-merge (this one) = loudest and most aggressive.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eSits between the S58 downpipes and the rear exhaust. Off-road \/ race use only.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S58 — G80 M3, G82 M4. Confirm your chassis in the selector.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Default Title","offer_id":43280747397181,"sku":"AA-MP-S58-SINGLE","price":1438.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/AA_G80_Sig_Single_Midpipe_Brace_01.webp?v=1781743119"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/collections\/vrsf-downpipe-n54-BLK01.png?v=1781758265","url":"https:\/\/essewerks.com\/collections\/exhaust.oembed","provider":"Esse Werks","version":"1.0","type":"link"}