This Wavetrac limited slip differential uses a patented helical gear design to automatically bias torque to the wheel with more available traction, improving grip in low-traction conditions without the abrupt engagement of a clutch-type LSD. It is built with high-strength 9310 steel gears in case-hardened differential bodies and ARP fasteners, and is maintenance-free with a transferable limited lifetime warranty.

Fitment: MINI Cooper S and John Cooper Works models with a Getrag 6-speed manual transmission (R55, R56, R57, R58, R59) equipped with the N14 or N18 1.6L turbocharged engine.