RKP Carbon Fibre Diffuser - BMW 3 Series F80 M3 | 4 Series F82 | F83 M4 Twill:1x1 Prevents sway bar-induced suspension stress

Prevents sway bar-induced suspension stress

The Evolve 4-1 headers can be used in isolation without any other performance upgrade and give a minimum gain of 30 hp and 27 lb/ft torque

While the Fall Line rear upper control arm bearings are a substantial performance improvement

and also retains the factory BMW plastic shield and associated outlet ducting

RKP Carbon Fibre Diffuser - BMW 3 Series F80 M3 | 4 Series F82 | F83 M4 Twill:1x1 Prevents sway bar-induced suspension stressToday, RKP is proud to announce our first entry into what will be an extensive F8x M3 M4 catalog. While the majority of the F8X M car is stunningly muscular, the diffuser section in particular leaves something to be desired. The flat polyurethane insert installed from BMW does not match the M3 4s aerodynamically sculpted exterior, and so was the first item RKP elected to attack. In contrast, the RKP diffuser was designed with full length fins that