Bomiz BMW G8x M3 M4 S58 Valved Axle-Back Exhaust

The S58 in the G80/G82. An axle-back that gives it the sound it earned. BMW's S58 is the most powerful inline-six they've ever put in a road car — and the G80 M3 and G82 M4 carry it in the most driver-focused package BMW makes. The Bomiz Valved Axle-Back gives that engine valve-controlled sound management at the rear: electronic valves for full control from quiet to completely open, available in raw or black Cerakote finish depending on how you want it to look. The S58 has something to say. The axle-back decides when it says it. Stainless steel construction, Bomiz electronic valve system, available in raw or black Cerakote. Hand welded. Fits the full G80/G82 M3/M4 range. Specifications Stainless steel construction Bomiz electronic valve system Available in raw or black Cerakote finish Hand welded and polished HP and torque gains What's Included Axle-back exhaust system Electronic valve controller and wiring Necessary hardware and clamps Installation instructions Fitment BMW G80 M3 2021+ BMW G82 M4 2021+ BMW G80 M3 Competition 2021+ BMW G82 M4 Competition 2021+ BMW G80 M3 xDrive Competition 2022+ BMW G82 M4 xDrive Competition 2022+ *Competition use only WARNING: Please note that certain aftermarket exhaust systems may not comply with applicable US (including California) laws and regulations, and may therefore be prohibited for use on highways or roads, or on roads or vehicles otherwise subject to emissions control requirements. California prohibits the use of any aftermarket exhaust system that modifies, removes or replaces original equipment catalysts, unless CARB has issued an Executive Order as to such part or system. BOMIZ parts or exhaust systems/components used or intended for use on "racing vehicles" (i.e. a competition vehicle used exclusively for competition on closed-course circuits) do not require an exemption or Executive Order from CARB to be sold in California. However, such parts are prohibited from use on California public highways or roads, even if occasionally used "off-road."