The Yukon Grizzly Locker for Ford 9-inch differentials with 35-spline axles is a racing-styled mechanical positive-locking unit that provides full torque to both wheels when locked while permitting disengagement in turns. Intended for high-demand off-road and racing conditions, the Grizzly's patented tooth geometry and larger inner clutch radius improve shock resistance. It uses 8620 internals and is assembled in the USA.
Yukon Gear Grizzly Locker For Ford 9in Diff w/ 35 Spline Axles / Racing Design