STI Hardened Rear Diff Front Member Bushing 13270AA062 11mm is the factory thread

11mm is the factory thread size so no machine work is required

Subaru 6-speed flywheel provides the friction surface for the clutch to transfer power from the engine to the transmission

14001AB441

Height and spring preload are independently adjustable

6R MY08-19

STI Hardened Rear Diff Front Member Bushing 13270AA062 11mm is the factory threadRIGID DIFF MOUNTING STI Group N rear diff front support member bushings use a firmer durometer rubber compound in order to better control rear differential movement and torque reactions. These bushings are installed into the T shaped crossmember that supports the front of the rear diff and are critical for controlling torque reactions. Like most uprated mounts and bushings you should expect an increase in NVH making the car less comfortable to drive.