Our 5 speed billet transmission mount requires the use of OEM style bushings.
We designed it so that you have a wide selection of bushings to choose from different manufacturers.
These bushings are 60A durameter polyurethane bushings. We recommend these bushings for street use with occasional track use.
Stiffness on these are between the stock rubber and he 80A.
You can also use OEM rubber for street use, which will absorb majority of the vibrations and keep NVH minimum.