70D Polyurethane Transmission Mounts

The Revshift STM-BT transmission mounts are engineered for demanding performance applications, utilizing 70D polyurethane for exceptional durability and responsiveness. This material provides a hardness comparable to Delrin, nylon, and UHMW, but with the added advantage of being an elastomer that resists cracking and returns to its original shape when deformed. Unlike plastics, which can be brittle, Revshift's polyurethane ensures longevity and reliable performance, especially under race conditions. These mounts are sold as a set and are made in the USA. These mounts are explicitly recommended for race use only. They are designed to fit nearly all BMW models, with the exception of the E30 M3 and a few older vehicles. Common fitments include the E30, E36, E46, E9X, E8X, E21, E34, and E39 chassis. They replace BMW part numbers including 22316799331, 23711175939, 23711175424, and 23701141614. Revshift polyurethane transmission mounts come with a lifetime warranty, underscoring the brand's confidence in their product quality and durability.