Revshift polyurethane differential bushings completely replace the oem rubber bushings on the BMW E82, E81, E87, E88, E90, E91, E92, and E93 excluding the M3 and 1M. These bushings stiffen and strengthen the differential mounting points improving the vehicles handling capabilities. They are a two piece design which securely hold the differential in place preventing it from sliding or twisting. Improves handing Will not wear out like oem bushings Properly dampens the differential Prevents differential from moving / twisting Revshift bushing lube included Lifetime warranty Sold as a complete set Hardness80A Street (Black): Slightly stiffer and stronger than OEM rubber. No increase in NVH. Great choice as an upgraded stock replacement (OEM+).95A Track (Green): Significantly stiffer and stronger than OEM rubber. Noticeable increase in NVH. Excellent for enthusiastically driven street and track cars.75D Drift (Teal): Drastically stiffer and stronger than OEM rubber. Moderate increase in NVH. Most commonly used on dedicated drift and track cars.(NVH = noise, vibration, harmonics)Learn more about choosing polyurethane here: https://revshift.com/pages/polyurethane Please specify the hardness
