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MACH-1 Mid-Section - BMW G80/G82 M3/M4

Ready to transcend your S58 into something that feels like a Porsche GT3? No more larping, just straight mogging. The MACH-1 starts with a 3-inch equal-length upper section that merges into our signature 4-inch oval mid-section. That design is what gives the car its bold, GT3-inspired character. It completely transforms the sound of the S58, eliminating the platform's notorious rasp and replacing it with a smooth, refined exhaust note. It sounds incredible with both catted and catless downpipes, delivering a high-pitched, exotic tone under partial and full throttle while holding a deep, rich, masculine note at idle. Fitment and clearanceMost aftermarket systems scrape heavily on lowered cars, and plenty of them scrape even at stock ride height. We tested the MACH-1 on both. It clears exceptionally well with no scraping, and the included drop brace replaces the factory brace to give you additional clearance where it matters. What you getOur complete mid-section, which bolts directly to the factory rear muffler. It's also compatible with any aftermarket rear section designed to connect to the factory mid-section. All installation hardware comes with the kit, so there's nothing extra to source. Specifications Material: T304 stainless steel Construction: full back-purged TIG welds Sizing: 3-inch equal-length upper → 4-inch oval mid-section → 2.75-inch outlets Fitment: BMW G80/G82 M3/M4 (2021+) Includes: INR drop brace (replaces factory brace) and all installation hardware Build timeEvery system is made to order. From the time payment is received, current lead time is 10 to 15 business days for manufacturing before your system ships.