Introducing Boomba Racing’s newest product release for the 2015+ Subaru WRX. This brass shifter bushing is meant to replace the OEM rubber bushing on the transmission input arm. Replacing that rubber bushing with our solid brass bushing leads to a much more engaging gear change, while drastically reducing shifter slop. Pair this with our all-new shifter stop, shift lever, and shift plate, for the ULTIMATE shifting experience. This is one of the most inexpensive, yet effective mods you can do.