KCA377 - Control Arm - Inner Lock Washer KitKCA377 toe adjuster locking kit is designed to complement cars already fitted with KTA107, KTA108 and KTA109 camber & toe adjustable control arms. The kit replaces the OE or stock toe adjuster, and eliminates the tendency of the friction based factory adjuster to move and alter the required toe settings. Particularly relevant for race or rally vehicles or other high load applications. Can also be used with some other types of adjustable control arms.