BMW Agency Performance Valved Stainless Steel Cat-back Exhaust - G80 M3 / G82/83 M4

Transform your G8X M3 or M4 with the Agency Performance Valved Stainless Steel Cat-back Exhaust—a perfect balance of raw performance, everyday comfort, and unmatched sound. Engineered for the S58 twin-turbo straight-six, this system unlocks the aggressive tone BMW enthusiasts demand while keeping volume under control thanks to its valved design.

Crafted from high-quality T304 stainless steel, this cat-back offers exceptional durability, precision fitment, and a sleek finish. With valves closed, the system delivers a refined, stealthy note for daily driving. Open the valves, and it roars to life with a deep, aggressive exhaust tone that enhances turbo spool, delivers sharp crackles, and showcases the true character of the G80/G82/G83 platform.

Designed for both street and track, the Agency Performance Valved Cat-back reduces weight over the factory system and improves exhaust flow for better throttle response and a more exhilarating driving experience.

✅ Valved system – quiet when you want it, aggressive when you don’t
✅ T304 stainless steel – built for strength, durability, and performance
✅ Bolt-on fitment – no cutting or welding required
✅ Signature sound – exotic, deep tone with valves open
✅ Compatible with OEM or aftermarket downpipes

Fitment:

• BMW G80 M3 (2021+)

• BMW G82 M4 (2021+)

• BMW G83 M4 Convertible (2021+)