{"product_id":"remus-bmw-g80-g82-racing-downpipe-back-exhaust-system-m3-m3-competition-m4-m4-competition","title":"Remus BMW M3 G80 \u0026 M4 G82 Racing Downpipe-Back Valved Exhaust System (M3\/M4 Competition, 2021+) - Stainless Steel, GPF\/OPF Compatible, Performance Track Use","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eRemus Racing Valve-Controlled Downpipe-Back System for BMW M3 G80 and BMW M4 G82\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Unlock the true character of the S58 with this Austrian‑built Remus downpipe‑back system. Crafted from premium stainless steel with enlarged 76 mm pipework and switchable valves, it delivers a harder‑edged motorsport tone and sharper response while remaining OPF friendly. Ideal for G80 M3 and G82 M4 owners who want a serious track‑focused upgrade with OEM‑style valve integration and impeccable fit and finish.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    We have run this system ourselves and supplied it to many M3 and M4 drivers. Feedback on sound quality, build and fitment has been outstanding. If you are chasing a big‑bore, valve‑controlled race system that transforms your BMW without compromise, this is the one.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy this Remus system stands out\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eValve‑controlled sound profile, aggressive when open, refined when closed\u003c\/li\u003e\n    \u003cli\u003eLarge 76 mm tubing for reduced restriction and improved throttle response\u003c\/li\u003e\n    \u003cli\u003eShot‑blasted stainless steel for durability and a premium finish\u003c\/li\u003e\n    \u003cli\u003eLightweight design with precision fit at factory mounting points\u003c\/li\u003e\n    \u003cli\u003eHandmade in Austria with exceptional weld quality\u003c\/li\u003e\n    \u003cli\u003eFactory electronics retain full valve functionality via original actuators\u003c\/li\u003e\n    \u003cli\u003eSpherical connections for reliable sealing and easy installation\u003c\/li\u003e\n    \u003cli\u003e24 month Remus manufacturer warranty\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat is included\u003c\/h3\u003e\n  \u003cp\u003e\n    Complete racing downpipe‑back kit for BMW M3 G80 and BMW M4 G82 models, including Competition variants, compatible with cars with or without GPF\/OPF. The package comprises:\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eRemus Racing centre section\u003c\/li\u003e\n    \u003cli\u003eConnection tube package with integrated valves\u003c\/li\u003e\n    \u003cli\u003eSecondary catalyst replacement tube for EU vehicles\u003c\/li\u003e\n    \u003cli\u003eTailpipe set is optional and sold separately\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTailpipe options\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eStainless Steel Chromed Angled Rolled Edge Ø 102 mm\u003c\/li\u003e\n    \u003cli\u003eStainless Steel Chromed Angled Straight Cut Ø 102 mm\u003c\/li\u003e\n    \u003cli\u003eStainless Steel Chromed Straight Cut with Carbon Insert Ø 98 mm\u003c\/li\u003e\n    \u003cli\u003eStainless Steel Black Chrome Straight Cut with Carbon Insert Ø 98 mm\u003c\/li\u003e\n    \u003cli\u003eCarbon Tail Pipe Set with Titanium Internals Ø 102 mm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003ePipe diameter\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOriginal: 70 mm\u003c\/li\u003e\n    \u003cli\u003eRemus: 76 mm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eVehicle compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW M3 G80 2021+ with or without GPF\/OPF\u003c\/li\u003e\n    \u003cli\u003eBMW M3 G80 Competition 2021+ with or without GPF\/OPF\u003c\/li\u003e\n    \u003cli\u003eBMW M4 G82 2021+ with or without GPF\/OPF\u003c\/li\u003e\n    \u003cli\u003eBMW M4 G82 Competition 2021+ with or without GPF\/OPF\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTrack use and important notes\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eRACING product. No ECE type approval.\u003c\/strong\u003e Use on public roads is generally not permitted. The original exhaust requires cutting for installation.\u003c\/p\u003e\n  \u003cp\u003e\n    For track‑only parts such as sports silencers, cat‑back assemblies and cat replacement sections, an ECU calibration is recommended to maximise performance and help prevent a check engine light.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFitting and support\u003c\/h3\u003e\n  \u003cp\u003e\n    Professional installation is recommended. MJ Modifications offers fitting in Warwickshire. Request a quote or book your slot by emailing \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility check\u003c\/h3\u003e\n  \u003cp\u003e\n    We will verify fitment before dispatch. Please provide your UK registration or the last 7 digits of your VIN at checkout.\n  \u003c\/p\u003e\n\n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e081021 1100 + 081021 1200 + 081021 1400 + 081021 1510\u003c\/p\u003e\n\n  \u003ch3\u003eManufacturer and warranty\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Remus\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 24 months, non‑transferable\u003c\/p\u003e\n\n  \u003ch3\u003eAlso searched for\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW M3 G80 performance exhaust system, BMW M4 G82 performance exhaust system, switchable valve exhaust for M3, switchable valve exhaust for M4, OPF friendly exhaust upgrade, particulate filter compatible exhaust, S58 race exhaust, big bore 76 mm BMW exhaust, secondary cat delete pipe M3 M4 EU, centre section upgrade M3 M4, valve controlled sports exhaust, stainless steel racing exhaust BMW, plug and play valve exhaust, G80 M3 sound upgrade, G82 M4 sound upgrade, BMW M3 M4 Competition exhaust upgrade, downpipe back race system, Austrian made BMW exhaust, track only BMW exhaust system.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy choose it\u003c\/h3\u003e\n  \u003cp\u003e\n    Bigger bore tubing, precision valves and meticulous construction combine for a deep, assertive soundtrack and a noticeable step up in response. Customers love the tone and finish, and so do we. If you want your G80 or G82 to feel and sound like a genuine track machine while keeping factory valve control, this Remus racing system is the upgrade to beat.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Remus","offers":[{"title":"Default Title","offer_id":56008733720962,"sku":null,"price":2380.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/RemusBMWG80G82RacingDownpipe-BackExhaustSystem_M3_M3Competition_M4_M4Competition_-1_1946x_264a5c34-32ea-4c59-8cc1-593f451b2809.jpg?v=1764091522","url":"https:\/\/mjmodifications.co.uk\/products\/remus-bmw-g80-g82-racing-downpipe-back-exhaust-system-m3-m3-competition-m4-m4-competition","provider":"MJ Modifications","version":"1.0","type":"link"}