Fall-Line Motorsports - E9X M3 / E82 1M Rear Upper Control Arm Set GR86 The Evolve software makes increases

The Evolve software makes increases power evenly and equally throughout the range

DELETE-R | The error entry that occurs by changing the catalyst(s) and/or the OPF(s) will be disabled

It is well known that the Primary cats are a major restriction point on the E9X M3

we designed a pair of tubes with smooth curves and with an innovative Venturi stack matched to the inner diameter of the filter neck

Life-time warranty

Fall-Line Motorsports - E9X M3 / E82 1M Rear Upper Control Arm Set GR86 The Evolve software makes increasesFrom years of competitive race experience, Fall Line has become synonymous with producing not only championship caliber race cars, but the finest suspension components that help propel them to victory. As the final piece within Fall Lines suite of rear suspension offerings for the E9X M3 and E82 1M, these upper wishbones boast two major benefits: replace the OEM rubber bushings with spherical units and add valuable adjustability versus the standard,