03-18 Cummins & 11+ Duramax AAM 11.5" Yukon Grizzly Locker Differential

The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, and drag racing Grizzly Lockers provide 100 percent power to both tires, while still allowing for disengagement while negotiating turns The Yukon Grizzly locker is a mechanical locking differential It features a forged case and 8620 internals for maximum strength It's patented design reduces common locker failures Anatomy of a Yukon Grizzly Locker 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.   Provides 100% Power to Both Wheels Automatically Disengages Through Cornering Made From High Strength 8620 Steel Official Locker of Ultra4 Racing Spec Class   Extreme Strength for Extreme Conditions