The Race Series Engine Trans Mount Bushing Kit is designed specifically for IAG Subaru EJ transmission mounts. IAG’s transmission mounts feature the ability to swap bushings for street or track use. The Race Series kit includes a 4 piece solid steel bushing set that is stiffer than our 90A Competition Series Bushings. The solid steel bushings greatly reduce the movement of the transmission under hard acceleration. Due to the solid steel structure of the bushings, NVH (Noise Vibration Harshness) is very perceivable through the interior.

The Street Series Transmission Mount Bushing Kit is designed specifically for IAG Subaru EJ Transmission Mounts. IAG’s transmission mounts feature the ability to swap bushings for street or track use. The Street Series kit includes (x4) 75A durometer bushings that are slightly stiffer than the Subaru Group N mount. The 75A durometer bushings reduce the transmission movement under hard acceleration. Due to the higher durometer used in the street series bushings, slight NVH (Noise Vibration Harshness) is perceivable through the interior.

The Competition Series Engine Transmission Bushing Kit is designed specifically for IAG Subaru EJ transmission mounts. IAG’s transmission mounts feature the ability to swap bushings for street or track use. The Competition Series kit includes (x4) 90A durometer bushings that are stiffer than our 75A Street Series Bushings. The 90A durometer bushings help to greatly reduce the movement of the transmission under hard acceleration. Due to the higher durometer, additional NVH (Noise Vibration Harshness) is perceivable through the interior.