Active Autowerke Signature X Pipe with Straight Pipes (Race) - E9X M3Unleash the true motorsport character of your BMW E9X M3 with the Active Autowerke Signature X Pipe with Straight Pipes engineered exclusively for track and off road use. Designed as a direct bolt on upgrade, this system delivers uncompromised flow, precision fitment, and a spine tingling exhaust note worthy of the S65 V8. Developed with decades of racing heritage, the Signature X Pipe eliminates both primary and secondary catalytic converters to