Yukon Grizzly Locker^®

Mechanical positive-locking differentials have been the staple for drag racing, circle track racing, off road use and a variety of other performance applications for decades. Yukon’s Grizzly Locker features an 8620 case, forged 8620 internals and a patented design which reduces common locker failures. The inner clutch teeth have an improved design, with a larger radius at the base, improving strength over back-cut designs. Larger teeth help to avoid breakage against shock-loading or in the event an axle breaks. The internals are hand fitted, for faster engagement. These units provide maximum traction and strength for many performance applications. Grizzly Lockers are available for a variety of car and truck applications, with new applications being added all the time!

Mechanical/automatic lockers are “set-it-and-forget-it” propositions. Once installed, they require no pneumatic or electronic activation. On-throttle driving conditions, where load is applied to the differential, induces locking. Off-throttle situations, where the diff is unloaded, leads to a partially unlocked unit. When the vehicle turns and the two wheels turn at different speeds, the unit makes a clicking sound as the side gears move over and past one another.

The Yukon Grizzly Locker is a patented design featuring 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. The Grizzly Locker is backed by The Best Warranty In The Business, a one-year warranty against manufacturing defects, with up to $2,000 for any collaterally damaged parts and associated labor. Confidence in your driveline is the key to enjoying your time behind the wheel. The Yukon Grizzly Locker is primed and ready for whatever abuse the trail, track, or off-road course can dish out so you get the most out of every moment.

Confidence in your driveline is the key to enjoying your time behind the wheel. The Yukon Grizzly Locker is primed and ready for whatever abuse the trail, track, or off-road course can dish out so you get the most out of every moment.

• Mechanical/Automatic locker always ready to enhance traction
• Easy installation, requiring no pneumatic or electronic engagement system
• Forged 8620 steel case and internals for superior durability
• Patented design reduces common locker failures
• One (1) year warranty against manufacturing defects Assembled in the U.S.A.
• Industry-leading quality assurance testing

Shop Grizzly Lockers