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.
3.92 and up ratio only
8620 internals for added strength
Assembled in the USA
Fits Dana Spicer 44 with 30 spline axles
Patented internal design reduces common locker failures
Technical Notes: This unit will not work with early tapered axle designs that used an axle spacer button. This unit is drilled for 7/16" ring gear bolts. If using in an application with 3/8" bolts, please purchase (10) YSPBLT-027 spacers.