The GKTECH Z33 350Z/G35 transmission mount stiffner is a direct fit into the standard transmission mount. By filling the void in the OEM trans mount the stiffners help reduce motor and trans movement to get the power to the ground. Particularly useful in track car where the car is off and on the throttle regularly. The end result is similar to an aftermarket trans mount but without the extra noise and without the extra cost. Simply drop the crossmember and insert an insert on each side and tigthen the crossmember again. - Manufactured from a proprietary 90sHA material - Very quick and easy install Vehicle Compatibility: - Nissan Z33 350z - Infiniti G35