Jeep JK Differential Locker - Rear - Yukon Gear & Axle - Grizzly Locker - '07-'17 is a mechanical positive-locking rear differential designed for the Jeep JK Non-Rubicon Dana 44 (30-spline). It delivers reliable traction when you need it while still allowing disengagement during turns.

The Yukon Grizzly Locker features a patented internal design with larger-radius inner clutch teeth that offer up to 350% greater strength versus back-cut designs, helping resist breakage from shock-loading or catastrophic axle failure. Built with a forged case and 8620 steel internals, this unit is assembled in the USA and engineered for serious off-road use—rock crawling, trail running, off-road racing, and drag applications. The locker provides 100% power to both rear wheels under load and is drilled for 1/2" ring gear bolts. Note: 2012-and-newer JKs equipped with stability control may require aftermarket ECU tuning to avoid codes or limp mode.

Features

• Fits Jeep JK Non-Rubicon Rear Dana 44 (2007–2017), 30-spline
• Mechanical positive-locking design — 100% power to both tires under load
• Patented larger-radius clutch teeth for up to 350% greater strength vs. back-cut designs
• Forged case with 8620 internals for increased durability
• Assembled in the USA; drilled for 1/2" ring gear bolts
• Backed by Yukon warranty coverage (replacement unit and collateral parts/labor up to $2,000)

If you have questions or need help confirming fitment, call us directly — we're happy to assist. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) | 562-981-6800 (CA)

If you are considering purchasing multiple items, please contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov