CNT Racing 08-13 Race BMW M3 Coupe Catback Exhaust  Brand new design from CNT Racing , Made with full T-304 Stainless down to the flange is stainless steel.  Dual 63.5 mm piping with Quad tip 3.5 inch tips. (This is a huge compare to those 3 inch tip exhaust systems)Dyno horsepower increase 17 horsepower and 11 torque 91 octane gas.
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