Yukon Gear Grizzly Locker For Ford 9in Diff w/ 35 Spline Axles / Racing Design

This Yukon Gear Grizzly Locker is a mechanical positive-locking differential designed for serious off-road and racing applications. You get the locker unit itself, featuring a patented internal design and 8620 internals for added strength. This locker is built to handle the demands of rock crawling, trail running, off-road racing, and drag racing, providing 100% power to both tires simultaneously. It's engineered for Ford 9-inch differentials with 35-spline axles and is specifically intended for racing use.

What sets the Grizzly Locker apart is its robust construction and advanced gear tooth design. The inner clutch teeth have a larger radius at the base, which Yukon Gear states offers up to 350% greater strength compared to back-cut designs. This means the teeth are more resistant to breakage from shock-loading or catastrophic axle failure, making it a solid choice for high-stress situations. The unit allows for disengagement while negotiating turns, offering a balance between maximum traction and drivability.

This locker fits a wide range of classic Ford vehicles equipped with a Ford 9-inch rear end and 35-spline axles, including models like the Ford Bronco (1966-1986), Ford F-100 (1957-1983), and Ford Mustang (1965-1973). Installation will require specific tools and knowledge of differential setup, and it's important to follow the manufacturer's instructions carefully, especially given its racing-focused design.