Revshift polyurethane rear trailing arm bushings completely replace the oem rubber bushings on the E36 (318, 323, 325, 328, M3, not 318ti) and E46 (323, 325, 328, 330, M3, Z4). These bushings stiffen the rear trailing arms improving the vehicles handling capabilities. Improves handing Will not wear out like oem bushings Properly dampens the rear trailing arms Revshift bushing lube included Lifetime warranty Sold as a 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
