Likewise, its elasticity and memory means they are also free from deformation which plastic bushings (Delrin, UHMW) are very prone to.ĪKG bushings are the only aftermarket bushings for BMW molded in the USA in accordance to ISO 9001:2015 certified standards – the gold standard in manufacturing. This exclusive compound allows us to manufacture a bushing that has virtually the same performance as a solid bushing, but without the harshness on the chassis associated with solid metal bushings. Military Spec 75D durometer compound is as hard as a bowling ball, yet has elasticity and memory. Remember: the material used for the diff mount bushing location(s) must match the material used for the subframe bushings. This is the proper durometer for high horsepower and/or big grip cars. They are the best option for race classes where solid bushings are not allowed, or for those who do not wish to deal with the issues that may arise when using solid metal bushings.

These extremely hard, race-spec 75D durometer polyurethane BMW E46 M3 diff mount bushings are the hardest available (aside from solid aluminum). Eliminate virtually all of this movement and allow your diff to operate effectively with our BMW E46 (M3), Z4 (M) poly 75D differential bushings. The stock rubber diff bushings deflect as torque moves through the drivetrain, which allows the differential to move. These BMW E46 (M3), Z4 (M) Polyurethane (75D) Differential (Diff) Mount Bushings eliminate virtually all differential movement for effective power transfer to the rear wheels.

E46 m3 differential bushings