Yukon Gear Grizzly Locker Differential, For GM 8.5" & 8.6", 30 Spline, 2.73 & Up
 
The Yukon Grizzly Locker is the ultimate in locking differentials for street; off-road;/drag racing. Grizzly Lockers provide 100% power to both tires; while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features 8620 internals for maximum strength. It s patented design reduces common locker failures. All units assembled in the USA!