Reduce differential bushing deflection and minimize wheelhop with polyurethane differential bushings from BMR Suspension. Polyurethane is a synthetic polymer that has many properties that make it far superior to OEM rubber bushings. Polyurethane deflects far less that soft rubber, and it doesnt breakdown from exposure to petroleum products, road salt, ozone, and other elements of the harsh undercar environment suspension bushings live in. BMRs polyurethane differential bushings (BK001) drastically increase differential stability over the factory rubber bushings. The bushings are molded from 68-durometer polyurethane, which reduced bushing deflection, while still absorbed road noise and engine vibrations. This allows you to increase performance without decreasing comfort. Designed for any performance application, BMR Differential Bushings minimize power robbing differential movement by replacing the OE soft rubber bushings with high durometer 4-piece polyurethane bushings. The 68-durometer polyurethane bushings effectively minimize wheelhop without contributing to road noise or driveline vibrations. BMR differential bushings should be considered an absolute must for any type of high performance driving. BMR does not recommended these for vehicles with more than 450 RWHP. For applications above this power lever, BMR suggests the BK029 Differential Bushing Kit (95 durometer polyurethane) or BK026 Differential Bushing Kit (Delrin). BMR Suspensions BK001 Differential Bushing Kit is available in black. Installation time is about 4-5 hours and may vary depending on stock bushing removal technique. Proudly made in the U.S.A.!