{"title":"Active Autowerke","description":null,"products":[{"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":"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\/active_autowerke_brand.svg?v=1781758309","url":"https:\/\/essewerks.com\/collections\/active-autowerke.oembed","provider":"Esse Werks","version":"1.0","type":"link"}