{"title":"G83 Chassis","description":null,"products":[{"product_id":"fuelit-pi-kit-s58","title":"Fuel-It! Port Injection Kit — S58 (G8x M3\/M4, G87 M2, X3 M \/ X4 M)","description":"\u003cp\u003e\u003cstrong\u003eFuel-It! port injection kit for the S58 — the G8x M3\/M4 (including M3 Touring and M4 Convertible), G87 M2, and F97 X3 M \/ F98 X4 M.\u003c\/strong\u003e Low-pressure port injection across all six intake runners, backing up the S58's direct injection for big power on pump, race gas, or E85 (Fuel-It rates the kit up to 1,000+ whp with the right injectors).\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA Fuel-It S58 billet fuel rail, up to six flow-matched port injectors (sized to your choice), stainless-braided lines, a port-injection controller, and the install hardware\/jig. It supplements the factory DI; injector size sets the power ceiling.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eThree choices in the configurator. \u003cstrong\u003eInjector:\u003c\/strong\u003e No injectors (rail and hardware only, to carry over your own set), or 550, 750, 950, or 1050cc — size it to your power target. \u003cstrong\u003eController:\u003c\/strong\u003e Standard fires the port injectors as a batched bank; CANfuel Sequential is Fuel-It's CAN-bus controller that fires each injector in sequence with the engine for finer fuel control. \u003cstrong\u003eFlex-Fuel:\u003c\/strong\u003e None, reuse your existing flex-fuel sensor, or add a new sensor.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eSupplemental fuel for high-power S58 builds. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 — G80 M3, G81 M3 Touring, G82 M4, G83 M4 Convertible, G87 M2, F97 X3 M, F98 X4 M. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-s58\"\u003eFueling Kit — S58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Fuel-It!","offers":[{"title":"No injectors \/ Standard \/ None","offer_id":43280675045437,"sku":"FI-PI-S58","price":1995.0,"currency_code":"USD","in_stock":true},{"title":"No injectors \/ Standard \/ Reuse existing sensor","offer_id":43280675078205,"sku":"FI-PI-S58-FLEXR","price":2094.0,"currency_code":"USD","in_stock":true},{"title":"No injectors \/ Standard \/ New sensor","offer_id":43280675110973,"sku":"FI-PI-S58-FLEXN","price":2424.0,"currency_code":"USD","in_stock":true},{"title":"No injectors \/ CANfuel Sequential \/ None","offer_id":43280675143741,"sku":"FI-PI-S58-SEQ","price":2494.0,"currency_code":"USD","in_stock":true},{"title":"No injectors \/ CANfuel Sequential \/ Reuse existing sensor","offer_id":43280675176509,"sku":"FI-PI-S58-SEQ-FLEXR","price":2593.0,"currency_code":"USD","in_stock":true},{"title":"No injectors \/ CANfuel Sequential \/ New sensor","offer_id":43280675209277,"sku":"FI-PI-S58-SEQ-FLEXN","price":2923.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ Standard \/ None","offer_id":43280675242045,"sku":"FI-PI-S58-I550","price":2284.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ Standard \/ Reuse existing sensor","offer_id":43280675274813,"sku":"FI-PI-S58-I550-FLEXR","price":2383.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ Standard \/ New sensor","offer_id":43280675307581,"sku":"FI-PI-S58-I550-FLEXN","price":2713.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ CANfuel Sequential \/ None","offer_id":43280675340349,"sku":"FI-PI-S58-I550-SEQ","price":2783.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ CANfuel Sequential \/ Reuse existing sensor","offer_id":43280675373117,"sku":"FI-PI-S58-I550-SEQ-FLEXR","price":2882.0,"currency_code":"USD","in_stock":true},{"title":"550cc \/ CANfuel Sequential \/ New sensor","offer_id":43280675405885,"sku":"FI-PI-S58-I550-SEQ-FLEXN","price":3212.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ Standard \/ None","offer_id":43280675438653,"sku":"FI-PI-S58-I750","price":2384.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ Standard \/ Reuse existing sensor","offer_id":43280675471421,"sku":"FI-PI-S58-I750-FLEXR","price":2483.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ Standard \/ New sensor","offer_id":43280675504189,"sku":"FI-PI-S58-I750-FLEXN","price":2813.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ CANfuel Sequential \/ None","offer_id":43280675536957,"sku":"FI-PI-S58-I750-SEQ","price":2883.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ CANfuel Sequential \/ Reuse existing sensor","offer_id":43280675569725,"sku":"FI-PI-S58-I750-SEQ-FLEXR","price":2982.0,"currency_code":"USD","in_stock":true},{"title":"750cc \/ CANfuel Sequential \/ New sensor","offer_id":43280675602493,"sku":"FI-PI-S58-I750-SEQ-FLEXN","price":3312.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ Standard \/ None","offer_id":43280675635261,"sku":"FI-PI-S58-I950","price":2484.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ Standard \/ Reuse existing sensor","offer_id":43280675668029,"sku":"FI-PI-S58-I950-FLEXR","price":2583.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ Standard \/ New sensor","offer_id":43280675700797,"sku":"FI-PI-S58-I950-FLEXN","price":2913.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ CANfuel Sequential \/ None","offer_id":43280675733565,"sku":"FI-PI-S58-I950-SEQ","price":2983.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ CANfuel Sequential \/ Reuse existing sensor","offer_id":43280675766333,"sku":"FI-PI-S58-I950-SEQ-FLEXR","price":3082.0,"currency_code":"USD","in_stock":true},{"title":"950cc \/ CANfuel Sequential \/ New sensor","offer_id":43280675799101,"sku":"FI-PI-S58-I950-SEQ-FLEXN","price":3412.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ Standard \/ None","offer_id":43280675831869,"sku":"FI-PI-S58-I1050","price":2894.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ Standard \/ Reuse existing sensor","offer_id":43280675864637,"sku":"FI-PI-S58-I1050-FLEXR","price":2993.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ Standard \/ New sensor","offer_id":43280675897405,"sku":"FI-PI-S58-I1050-FLEXN","price":3323.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ CANfuel Sequential \/ None","offer_id":43280675930173,"sku":"FI-PI-S58-I1050-SEQ","price":3393.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ CANfuel Sequential \/ Reuse existing sensor","offer_id":43280675962941,"sku":"FI-PI-S58-I1050-SEQ-FLEXR","price":3492.0,"currency_code":"USD","in_stock":true},{"title":"1050cc \/ CANfuel Sequential \/ New sensor","offer_id":43280675995709,"sku":"FI-PI-S58-I1050-SEQ-FLEXN","price":3822.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/FuelIt__s58-bmw-port-injection-kit__3.webp?v=1781742887"},{"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":"spool-fx350-hpfp-s58","title":"Spool Performance FX-350 High-Pressure Fuel Pumps (Pair) — S58","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance FX-350 high-pressure fuel pumps for the S58 — supplied as a matched pair for the engine's dual-pump direct-injection system.\u003c\/strong\u003e Each is a 390-bar (5,600 psi) pump with a stainless, DLC-coated piston and bore; together they deliver about 50% more fuel than the OEM pumps.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA two-pump kit (one per OEM location) — Spool sizes the S58\/S63 V8 pumps at 390 bar rather than the inline-six's 350 bar. Plug-and-play, lifetime warranty, pairs with Spool's Gen2 DI injectors. The kit includes both pumps, brackets, an alignment tool, a triple-layer low-pressure line, and a plug-and-play adapter harness + hardline.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eHigh-pressure (DI) side; run it with an upgraded low-pressure in-tank pump and a matching calibration. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eOptions\u003c\/h3\u003e\n\u003cp\u003eSpool offers a wireless ethanol-content analyzer and a 10-micron inline filter as add-ons — tell us if you want either specced in.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 — G80\/G81 M3, G82\/G83 M4, G87 M2, F97 X3 M, F98 X4 M. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-s58\"\u003eFueling Kit — S58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"None \/ None","offer_id":43280685563965,"sku":"SP-S58-FX350-2","price":5435.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ None","offer_id":43280685596733,"sku":"SP-S58-FX350-2-UE","price":5435.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ None","offer_id":43280685629501,"sku":"SP-S58-FX350-2-EA","price":5784.0,"currency_code":"USD","in_stock":true},{"title":"None \/ With 10-Micron Filter","offer_id":43280685662269,"sku":"SP-S58-FX350-2-F","price":5584.0,"currency_code":"USD","in_stock":true},{"title":"Use my existing \/ With 10-Micron Filter","offer_id":43280685695037,"sku":"SP-S58-FX350-2-UE-F","price":5584.0,"currency_code":"USD","in_stock":true},{"title":"Include \/ With 10-Micron Filter","offer_id":43280685727805,"sku":"SP-S58-FX350-2-EA-F","price":5933.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/spool-fx350-hpfp-ew02.webp?v=1781742886"},{"product_id":"dorch-s58-flex-fuel-eca-kit","title":"Dorch Engineering S58 Flex Fuel ECA Kit","description":"\u003cp\u003e\u003cstrong\u003eDorch Engineering plug-and-play Flex Fuel ECA (Ethanol Content Adapter) kit for the S58.\u003c\/strong\u003e Reads ethanol content from a CAN-based Continental flex-fuel sensor and broadcasts the value directly to the DME — full flex fuel operation with no piggyback ECU, no datalog-and-flash dance, no fueling assumptions baked into the calibration.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this enables\u003c\/h3\u003e\n\u003cp\u003eThe S58 supports E85, E70, E30, and any pump-blend in between at the calibration level — but only if the DME knows the actual ethanol content of what's in the tank. Without a flex-fuel sensor, the calibration has to assume a fuel grade (typically 93 octane) and trim conservatively at sustained boost. With the Dorch ECA Kit installed and a Continental flex-fuel sensor in the fuel line, the DME reads ethanol percentage in real time and the Esse Werks Stage 2 \/ Stage 3 calibrations target full power on whatever blend you're running.\u003c\/p\u003e\n\n\u003ch3\u003eReal-world output difference\u003c\/h3\u003e\n\u003cp\u003eOwners running higher-ethanol blends report meaningfully more power than the same Stage 3 calibration on 93 octane — the flex-fuel infrastructure is what opens the upper end of the S58's tune-able envelope, because the DME is targeting real ethanol content instead of trimming around an assumed fuel grade.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDorch ECA controller (CAN-based, plug-and-play to the OEM DME wiring)\u003c\/li\u003e\n  \u003cli\u003eMounting hardware\u003c\/li\u003e\n  \u003cli\u003eInstallation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat you ALSO need (sold separately)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eContinental flex-fuel sensor — plumbed into the fuel feed line\u003c\/li\u003e\n  \u003cli\u003eStainless fuel line fittings to match your existing fuel system\u003c\/li\u003e\n  \u003cli\u003eA calibration that supports flex fuel (Esse Werks Stage 2 or 3 S58 with flex fuel option selected at intake)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003eA workshop job at a competent shop — see the spec row for the estimated install time. The ECA controller mounts in the engine bay or under-trim area. Flex-fuel sensor installation requires a fuel line tap (best done at the fuel filter or rail inlet). Calibration re-flash after install to enable flex fuel maps.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e2021-2026 BMW G80 M3, G82 M4, G83 M4 Convertible. 2023+ G87 M2. 2020+ F97 X3 M, F98 X4 M. Confirm chassis at intake.\u003c\/p\u003e\n\u003cp\u003eIf you're sourcing fueling alongside the calibration, the \u003ca href=\"\/products\/fueling-kit-s58\"\u003eFueling Kit — S58\u003c\/a\u003e bundles the matched parts + tune for 8% under à la carte.\u003c\/p\u003e","brand":"Dorch Engineering","offers":[{"title":"Default Title","offer_id":43280695459901,"sku":"EW-FUEL-DORCH-S58-FLEX","price":1045.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/dorch_S58-ECA.webp?v=1781742887"},{"product_id":"spool-stage3-lpfp-s58","title":"Spool Performance Stage 3 Low-Pressure Fuel Pump — S58","description":"\u003cp\u003e\u003cstrong\u003eSpool Performance Stage 3 low-pressure fuel pump for the S58 — the in-tank side that keeps a Stage 3 build fed.\u003c\/strong\u003e A big high-pressure pump is only as good as what feeds it; the factory in-tank (low-pressure) pump runs out of duty on E85 and high boost, and rail pressure drops up top. Spool's Stage 3 adds a boost-activated secondary in-tank pump, roughly doubling low-pressure flow.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eA twin-pump in-tank upgrade: the factory pump plus a second pump that switches on under boost (boost\/Hobbs-switch activated), so cruise stays factory-quiet and the system only ramps when you're on it. Spool rates it to support 1,200+ whp. Supplied as a complete drop-in assembly; DIY and built-bucket formats are also available — ask if you'd prefer one.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits in the build\u003c\/h3\u003e\n\u003cp\u003eLow-pressure (in-tank) side; it pairs with an upgraded high-pressure (DI) pump so the HPFP is never starved. We tune the engine to the fuel system.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 — G80\/G81 M3, G82\/G83 M4, G87 M2, F97 X3 M, F98 X4 M. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eSourcing fueling with the tune? The \u003ca href=\"\/products\/fueling-kit-s58\"\u003eFueling Kit — S58\u003c\/a\u003e bundles the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Assembled","offer_id":43280695722045,"sku":"SP-S58-DIYLPFP","price":935.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Spool_stage3_lpfp_jpg.png?v=1781742666"},{"product_id":"xona-xrc5557s-b48","title":"Xona XRC5557S — B48","description":"\u003cp\u003eThe Xona XRC5557S is a ball-bearing turbocharger built around the XR57S UHF splitter-blade turbine wheel. Compressor: 55mm inducer \/ 76mm exducer; 68 lb\/min rated flow; published range 300–680HP. The XRC5557S steps up from the XRC5357S with a larger compressor stage for increased peak flow capacity while sharing the same 57mm turbine outlet and UHF inertia-reduction design. Configured here for the BMW B48 as a single-turbo installation.\u003c\/p\u003e\n\u003cp\u003eTurbine housing — Material, Flange, and A\/R — is selected using the guided cascade above. Compressor cover (X2C or X3C) and SwainTech coating are also selected above.\u003c\/p\u003e\n\u003cp\u003eSwainTech White Lightning thermal barrier coating is available on the turbine housing (hot side), compressor housing (cold side), or both — add it via the Coating option. Ordered the BYO Core option? We will contact you after purchase with instructions for sending in your housing. Approximately three-week build turnaround from receipt of your core.\u003c\/p\u003e","brand":"Xona Rotor","offers":[{"title":"TiAL Stainless · V-Band · .82 ★ \/ X2C \/ No Coating","offer_id":43280697229373,"sku":null,"price":2516.4,"currency_code":"USD","in_stock":true},{"title":"TiAL Stainless · V-Band · .82 ★ \/ X2C \/ Turbine Housing (hot side)","offer_id":43280697262141,"sku":null,"price":2716.4,"currency_code":"USD","in_stock":true},{"title":"TiAL Stainless · V-Band · .82 ★ \/ X2C \/ Compressor Housing (cold side)","offer_id":43280697294909,"sku":null,"price":2716.4,"currency_code":"USD","in_stock":true},{"title":"TiAL Stainless · V-Band · .82 ★ \/ X2C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280697327677,"sku":null,"price":2866.4,"currency_code":"USD","in_stock":true},{"title":"TiAL Stainless · V-Band · .63 \/ X2C \/ No Coating","offer_id":43280697360445,"sku":null,"price":2516.4,"currency_code":"USD","in_stock":true},{"title":"TiAL Stainless · V-Band · .63 \/ X2C 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Housing (hot side)","offer_id":43280698966077,"sku":null,"price":2793.0,"currency_code":"USD","in_stock":true},{"title":"BYO Core — send us your housing \/ X3C \/ Compressor Housing (cold side)","offer_id":43280698998845,"sku":null,"price":2793.0,"currency_code":"USD","in_stock":true},{"title":"BYO Core — send us your housing \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280699031613,"sku":null,"price":2943.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/prod-gemini-ubethu.webp?v=1781987417"},{"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\/prod-gemini-bz3c8e.webp?v=1781987415"},{"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":"tune-g83-m4-conv","title":"BMW G83 M4 Convertible — Custom BM3 Tune (S58)","description":"\u003cp\u003e\u003cstrong\u003eLogged, verified, revised. Documented in writing. Yours to keep.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA custom bootmod3 calibration for the G83 (S58) — built from datalogs on your car, not a map off a shelf. We start from what your engine is actually doing in fuel trims, timing, knock, and load, and revise against the next log until the math and the data agree.\u003c\/p\u003e\n\u003ch3\u003eHow we approach it\u003c\/h3\u003e\n\u003cp\u003eMath first, datalogs second, marketing claims a distant last. We don’t publish dyno numbers we can’t reproduce; we tune to what your specific car does on the fuel you actually buy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/configure\"\u003eConfigure your tune →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe matched Stage Kit for this engine — components + the calibration sold as one decision — is the \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e. 8% under buying the parts and tune à la carte.\u003c\/p\u003e","brand":"Esse Werks","offers":[{"title":"Stage 1","offer_id":43280702144573,"sku":"EW-TUNE-G83-M4-CONV-G83-S1","price":495.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":43280702177341,"sku":"EW-TUNE-G83-M4-CONV-G83-S2","price":595.0,"currency_code":"USD","in_stock":true},{"title":"Stage 3","offer_id":43280702210109,"sku":"EW-TUNE-G83-M4-CONV-G83-S3","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/tune-card-s58_8d250ac9-9ef9-42b6-9edd-924e6502466d.png?v=1785695722"},{"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\/prod-gemini-trvc55.webp?v=1781987416"},{"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":"csf-cac-s58","title":"CSF \"Level-Up\" Charge-Air-Cooler Manifold — S58 (G8x M3\/M4, G87 M2, X3 M \/ X4 M)","description":"\u003cp\u003e\u003cstrong\u003eCSF \"Level-Up\" charge-air-cooler manifold for the S58 — G80 M3, G82 M4, G87 M2, and F97 X3 M \/ F98 X4 M.\u003c\/strong\u003e A billet intake manifold (CSF by PWR) with an integrated bar-and-plate water-to-air charge cooler that replaces the OEM plastic manifold and its failure-prone tube-and-fin core.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eThe PWR bar-and-plate core is pressure-tested to 120 psi (the OEM core is prone to failing past ~27 psi), and CSF measures about a 30°F drop in intake temps versus stock. CNC-billet tanks, a top-feed port-injection fuel rail (block-off caps included), per-runner nitrous\/methanol ports, and an included KIYLEX thermal-rejection manifold spacer. Made in the USA.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eDefault is the \u003cstrong\u003eThermal Heat Dispersion coating\u003c\/strong\u003e — an emissivity coating that helps the part shed heat. Also available Raw, or in Esse Werks colors — Black, White, or Orange. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 — G80 M3, G82 M4, G83 M4 (incl. Competition \/ xDrive), G87 M2, and F97 X3 M \/ F98 X4 M. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the charge-cooler-side core of an 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":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280712794173,"sku":"CSF 8233","price":8695.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280712826941,"sku":"CSF 8233","price":8495.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280712859709,"sku":"CSF 8233","price":8495.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":43280712892477,"sku":"CSF 8233","price":8695.0,"currency_code":"USD","in_stock":true},{"title":"Orange","offer_id":43280712925245,"sku":"CSF 8233","price":8695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/csf_s58-level-up-charge-intake.webp?v=1781742886"},{"product_id":"csf-hx-s58","title":"CSF Front-Mount Heat Exchanger — S58 (G80 M3 \/ G82 M4 \/ G87 M2)","description":"\u003cp\u003e\u003cstrong\u003eCSF front-mount heat exchanger for the S58 — the heat-rejection side of the charge-air cooling system in the G8x M3\/M4 and G87 M2.\u003c\/strong\u003e The S58 cools its intake charge through a coolant loop; this front radiator is what removes that heat. The factory exchanger is a single-row, 35mm core with plastic tanks — fine stock, the limiter once the car is making more and seeing repeat pulls or track time.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eA 2-row, 42mm all-aluminum core with B-Tube geometry and TIG-welded aluminum tanks in place of the OEM plastic\/crimp construction. Ships with upper and lower rock guards and a transmission-cooler mounting kit, and drops into the factory location. CSF developed it over 100+ track hours.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 — G80\/G81 M3 (incl. Competition, CS), G82\/G83 M4 (incl. Competition, CSL), and G87 M2 \/ M2 CS. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the heat-exchanger-side core of an 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":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280714891325,"sku":"CSF 8215","price":1105.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280714924093,"sku":"CSF 8215","price":905.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280714956861,"sku":"CSF 8215","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/csf-hx-s58.webp?v=1781742886"},{"product_id":"mishimoto-charge-pipe-s58","title":"Mishimoto Performance Charge Pipe Kit — S58","description":"\u003cp\u003e\u003cstrong\u003eMishimoto performance charge pipe kit for the S58 — G80 M3, G82\/G83 M4, X3 M \/ X4 M.\u003c\/strong\u003e Replaces the OEM plastic merge and rubber sections with cast aluminum and silicone.\u003c\/p\u003e\n\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eTwo aluminum charge pipes, two CNC adapters, an aluminum spacer, three silicone couplers, grommets, clamps, and hardware. Cast-aluminum merge in place of the plastic OEM part; retains the flexibility of the OEM front section with durable silicone. Mishimoto rates it 27% less restrictive than stock and good to 60 psi \/ 1,000 hp.\u003c\/p\u003e\n\u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eInduction-side hardware on an S58 Stage 2 build — we tune to the supporting mods.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S58 — G80 M3, G82\/G83 M4, F97 X3 M, F98 X4 M, 2021+. Confirm your chassis.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eMishimoto Lifetime Warranty. Part no. MMICP-G80-21.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"Mishimoto","offers":[{"title":"Wrinkle Black","offer_id":43280716038205,"sku":"MMICP-G80-21","price":955.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/mishimoto-charge-pipe-s58.webp?v=1781742886"},{"product_id":"xona-xrc5557s-s58","title":"Xona XRC5557S — S58 Matched Pair (×2)","description":"\u003cp\u003eThe Xona XRC5557S is a ball-bearing turbocharger built around the XR57S UHF splitter-blade turbine wheel. Compressor: 55mm inducer \/ 76mm exducer; 68 lb\/min rated flow; published range 300–680HP. This listing is a matched pair for the S58 — price covers two identical turbos, one per bank. Both units ship with the same housing configuration selected above.\u003c\/p\u003e\n\u003cp\u003eAll prices shown are for the complete matched pair. Turbine housing — Material, Flange, and A\/R — is selected using the guided cascade above. Compressor cover (X2C or X3C) and SwainTech coating are also selected above. Coating prices shown cover both housings on both turbos.\u003c\/p\u003e\n\u003cp\u003eSwainTech White Lightning thermal barrier coating is available on the turbine housings (hot side), compressor housings (cold side), or all four housings — pricing shown is per the matched pair. Ordered BYO Core? We will contact you after purchase. Ship both cores together and mark the box with your order number. 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side)","offer_id":43280734322749,"sku":null,"price":5586.0,"currency_code":"USD","in_stock":true},{"title":"BYO Core — send us your housing \/ X3C \/ Compressor Housing (cold side)","offer_id":43280734355517,"sku":null,"price":5586.0,"currency_code":"USD","in_stock":true},{"title":"BYO Core — send us your housing \/ X3C \/ Both Turbine \u0026 Compressor Housings","offer_id":43280734388285,"sku":null,"price":5886.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/Xona_XRC5557S_pair_01.webp?v=1781743119"},{"product_id":"rk-autowerks-s58-race-manifold-billet-port-injection","title":"RK Autowerks S58 Race Manifold — Billet Port Injection","description":"\u003ch3\u003eWhat this actually does\u003c\/h3\u003e\n\u003cp\u003ePort injection is not a horsepower part. Anyone selling it that way is selling you a number. What it does is give the S58 a second, low-pressure fuel path so the engine is no longer limited by what the factory high-pressure pump can deliver — and that changes what a tuner is allowed to do with your calibration.\u003c\/p\u003e\n\u003cp\u003eOn a DI-only car, power gets pulled back at high ethanol content to stay inside the mechanical limits of the factory fuel system. That's why max-effort DI tunes end up leaner than anyone would like, and why they lean on exhaust cam timing workarounds to get there. Add port fuel and those constraints come off: full E85 instead of a carefully managed blend, richer air\/fuel at load, lower cylinder and piston temperatures, and no band-aids in the tune.\u003c\/p\u003e\n\u003cp\u003eThe direct dyno gain from switching to full E85 on port injection is typically 10–30 WHP on the same tune. The real return is that the power you already make gets safer, and the power above it becomes available at all.\u003c\/p\u003e\n\n\u003ch3\u003eDo you need it yet?\u003c\/h3\u003e\n\u003cp\u003eProbably not, if you're on stock or bolt-on turbos running pump gas or a light ethanol blend. DI-only S58s have made 800+ WHP with high-flow injectors and a stronger low-pressure pump, so we're not going to tell you there's a wall at 600.\u003c\/p\u003e\n\u003cp\u003eWhere it earns its money: builds targeting sustained high boost on full E85, cars that keep pulling timing on max-effort DI calibrations, and anything being built to live at power rather than to survive one dyno pull. If you're not sure which side of that line you're on, call us and we'll tell you honestly — including if the answer is not yet.\u003c\/p\u003e\n\n\u003ch3\u003eWhy the billet manifold instead of a rail kit\u003c\/h3\u003e\n\u003cp\u003ePort injection can be added to the factory manifold for a fraction of this price, and for a lot of builds that's the correct answer. This is the other end of the scale.\u003c\/p\u003e\n\u003cp\u003eThe factory S58 manifold is plastic. Under sustained boost that's a known weak point, and a split manifold takes the car off the road. This one is CNC-machined from solid 6061 with the fuel rail integrated into the casting rather than clamped to it — rigid, dimensionally stable, and one less thing to revisit at higher power.\u003c\/p\u003e\n\u003cp\u003eIt also consolidates hardware you'd otherwise be paying a fabricator for: six 1\/8\" NPT ports for methanol or nitrous, three more for sensors and boost reference. No bungs, no adapters, no welding.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC-machined 6061 billet aluminum\u003c\/li\u003e\n\u003cli\u003eIntegrated -8AN ORB fuel rail, included\u003c\/li\u003e\n\u003cli\u003eAccepts Bosch EV14K (shorty) injectors\u003c\/li\u003e\n\u003cli\u003e6 × 1\/8\" NPT ports — methanol or nitrous\u003c\/li\u003e\n\u003cli\u003e3 × 1\/8\" NPT ports — sensors, boost reference\u003c\/li\u003e\n\u003cli\u003eRetains OEM oil filter access and factory service points\u003c\/li\u003e\n\u003cli\u003eBolts to OEM mounting locations, factory gasket and hardware\u003c\/li\u003e\n\u003cli\u003eAvailable in Unfinished Aluminum or Thermal Black\u003c\/li\u003e\n\u003cli\u003e31.6 lbs · 24 × 14 × 14 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW M2 G87 (2021+) · M3 G80 (2020+) · M4 G82 \/ G83 (2020+) · X3M \/ X4M F97 \/ F98 (2019+)\u003c\/p\u003e\n\n\u003ch3\u003eWhat else the build needs\u003c\/h3\u003e\n\u003cp\u003eInjectors and the port injection line kit are separate purchases. Sizing depends on fuel, target power, and whether port is supplementing DI or replacing it — and the shorty body requirement rules out a lot of common part numbers, so confirm before you buy six of the wrong thing.\u003c\/p\u003e\n\u003cp\u003eFuel supply matters too. The stock low-pressure pump is generally considered good to around 700 WHP once port injection is in play; past that, or on straight E85, plan for a pump upgrade and flex fuel hardware rather than finding out on a pull.\u003c\/p\u003e\n\u003cp\u003eAnd it needs a tune. Dual-fuel control is not a bolt-on. We do this in-house as an authorized bootmod3 tuner, locally or remote.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eCovered under RK Autowerks' manufacturer warranty. Esse Werks is an authorized dealer — warranty claims are handled directly through us, not a support ticket in another state.\u003c\/p\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eOff-road and competition use only. Requires tuning.\u003c\/p\u003e\n\n\u003ch3\u003eShipping\u003c\/h3\u003e\n\u003cp\u003eUnfinished Aluminum in stock, ships from Boca Raton, FL. Thermal Black available to order.\u003c\/p\u003e","brand":"RK Autowerks","offers":[{"title":"Unfinished Aluminum","offer_id":43424105332797,"sku":"RK.MAN.S58.RACE","price":4999.99,"currency_code":"USD","in_stock":true},{"title":"Thermal Black","offer_id":43424188694589,"sku":"RK.MAN.S58.RACE-TB","price":4999.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/EW_RK_RACE_PI_BILLET_IM_001.webp?v=1785867981"}],"url":"https:\/\/essewerks.com\/collections\/chassis-g83.oembed","provider":"Esse Werks","version":"1.0","type":"link"}