The Yukon Grizzly Locker is a mechanical/automatic locking diff that?s engineered for rock crawling, serious trail running, off-road racing, and drag racing. It?s patented design features innovations that make it tougher than other lockers.
Features
GM 10.5" 14T differential40 spline4.10-down ratioInstalls into a bare factory open caseDoes NOT use the factory thrust washersPatented internal design reduces common locker failures8620 internals for added strength