The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street, off-road, and drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns.
3.73 and up ratio only
8620 internals for added strength
Assembled in the USA
Fits Dana Spicer 30 with 27 spline axles
Patented internal design reduces common locker failures
Technical Notes: This unit is double drilled for both 3/8" & 7/16" ring gear bolts.