Yukon Gear Grizzly Locker For Dana 60 / 4.10 & Down / 40 Spline

The Yukon Grizzly Locker is a mechanical positive-locking differential engineered for extreme off-road conditions, including rock crawling, serious trail running, off-road racing, and drag racing. It delivers 100% power to both tires while still allowing for disengagement during turns. The patented design features an advanced gear tooth design with a larger radius at the base of the inner clutch teeth, offering up to 350% greater strength compared to back-cut designs, and increased resistance to breakage from shock-loading or catastrophic axle failure. The internal components are made from 8620 steel for added strength. The unit is assembled in the USA.