Fall-Line Motorsports - E9X M3 / E82 1M Rear Upper Control Arm Set GLA-AMG (X157) you get what you need:

you get what you need: the perfect plug and play upgrade for your standard OE electronic suspension

Coolant change

RKP's high mounts for the GTS wing place the wing much higher relative to the M4's roof

Sports Cup Line (Titanium)

Fall-Line Motorsports - E9X M3 / E82 1M Rear Upper Control Arm Set GLA-AMG (X157) you get what you need:From 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,