Through the years the soft rubber bushings deteriorate after constant flexing and vibration as well as being punished through weathering; this can cause wear and tear and may seriously damage your engine and transmission. Megan Racing has developed a Hard-Rubber Reinforced transmission Mount for the Toyota Supra These reinforced mounts are perfect for the enthusiast who is looking to get the most from their vehicle as they will allow more energy to be transferred to the wheels instead of absorbing the energy into the soft OEM rubber. Material: Steel Alloy (Harden Rubber) Color: Black Harden Rubber Compound reduces Engine Torque twist and offers a more direct connection between the Drive-train and Chassis Hardened Rubber utilized is rated at 70A on the durometer scale Increased stability during cornering and acceleration Any item installed/mounted/used are not returnable