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 conditions.

• Fits GM and Chrysler 11.5" with 38 spline axles
• Patented internal design reduces common locker failures
• 8620 internals for added strength
• Assembled in the USA

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Information:

Factory spindles will need to be bored out with tool part number YT H32 in order to accept the 38 spline axles this locker takes.

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Application Summary:

Year	Make/Model
2001-2004	Chevrolet Silverado 2500
2001-2015	Chevrolet Silverado 2500 HD
2001-2006	Chevrolet Silverado 3500
2007	Chevrolet Silverado 3500 Classic
2007-2015	Chevrolet Silverado 3500 HD
2003-2010	Dodge Ram 2500
2003	Dodge Ram 2500 Van
2003-2010	Dodge Ram 3500
2001-2004	GMC Sierra 2500
2001-2015	GMC Sierra 2500 HD
2007	GMC Sierra 2500 HD Classic
2001-2006	GMC Sierra 3500
2007	GMC Sierra 3500 Classic
2007-2015	GMC Sierra 3500 HD
2014-2015	Ram 3500