Active Autowerke Valved Rear Exhaust W/ 100mm Tips - 2021+ G8x M3 / M4 (11-086) Oversize making the proper mixture in

making the proper mixture in the combustion chamber critical for best performance

Dimensions: 12"x12"x4

Dyno Proven gains of up to 30 hp and 80 lb-ft

All Seibon carbon fiber components are hand-crafted and meticulously inspected to ensure quality and fitment

Active Autowerke Valved Rear Exhaust W/ 100mm Tips - 2021+ G8x M3 / M4 (11-086) Oversize making the proper mixture inThe Active Autowerke Valved Rear Exhaust is designed specifically for the 2021+ BMW G80 M3 and G82 M4 to enhance the factory sound profile. Addressing the muted tone of the stock exhaust, this axle back system integrates with BMW's valve actuators to provide a deeper, more performance worthy exhaust note. Made in the USA from 304 stainless steel Delivers a low, deep sound while retaining stock valve control Test fitted on a dedicated G80 G82 exhaust