G4X BMW M240i Valved Rear Axle-back Exhaust Exhaust w Tips:w carbon fiber tips The X-Pipe design has a

The X-Pipe design has a scavenging effect that yields modest horsepower gains

synthetic filter oil designed specifically NOT TO damage any vehicle sensors

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G80/G82 BMW M3/M4 Rear Exhaust

G4X BMW M240i Valved Rear Axle-back Exhaust Exhaust w Tips:w carbon fiber tips The X-Pipe design has aG4X BMW M240i Rear Exhaust At Active Autowerke, it's not ONLY about making as much power as possible but to maximize the enjoyment of the drive. For over 40 years, power has been the end result of improved performance due to our relentless desire to develop a refined, quality product. This philosophy behind our performance parts is best represented by one of the newest additions to our G4X BMW M240i collection. The Active Autowerke M240i rear exhaust