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.

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Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and performance. The Yukon Grizzly Locker is a mechanical positive-locking differential that’s engineered for rock crawling, serious trail running, off-road racing, and drag racing. The unit provides 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly Locker is a patented design that features innovations that make it tougher than the competition. Its inner clutch teeth have a larger radius at the base, which offers up to 350% greater strength versus back-cut designs. The Grizzly Locker’s larger teeth also resist breakage caused by shock-loading or catastrophic axle failure. It’s a serious piece of mechanical engineering for serious driving situations.

• Fits Ford 10.25" and 10.5" differentials
• 35 spline
• 8620 internals for added strength
• Patented internal design reduces common locker failures
• Assembled in the USA

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Application Summary:

Year	Make/Model
2003-2014	Ford E-250
1985-2002	Ford E-250 Econoline
1985-1998	Ford E-350 Econoline
1999	Ford E-350 Econoline Club Wagon
2000-2015	Ford E-350 Super Duty
2000-2002	Ford E-450 Econoline Super Duty
2003-2015	Ford E-450 Super Duty
2002	Ford E-550 Econoline Super Duty
2003	Ford E-550 Super Duty
2000-2005	Ford Excursion
2000-2013	Ford F-150
1985-1999	Ford F-250
1999-2015	Ford F-250 Super Duty
1985-1997	Ford F-350
1999-2015	Ford F-350 Super Duty