Kartboy 15-21 WRX / STI Rear Diff/Carrier Wedge Lock System | KB-003-WEDGE

The Kartboy Rear Differential Carrier Wedge Lock Systrem has been designed to provide more reinforcement to the rear differential which adds a better feel, and more stability to the rear differntial under harsh driving conditions. This kit includes 4 machined aluminum inserts to lock in the rear differential bushing inserts, as well as 4 Carrier inserts, all in a black finish.