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

If you're building a serious off-road rig or a dedicated drag car, you need a differential that can handle extreme conditions and put power down reliably. The Yukon Gear Grizzly Locker is a mechanical locking differential designed for these demanding applications. It locks both axles together, ensuring that 100% of the engine's power goes to both tires simultaneously. This is crucial for situations like rock crawling, serious trail running, or launching off the starting line, where maximum traction is essential. While it locks both wheels, its patented design allows for disengagement when you're navigating turns, making it more manageable than a permanently locked differential.

What sets the Grizzly Locker apart is its robust internal design, built to withstand the abuse of racing and extreme off-roading. The internal clutch teeth feature a larger radius at the base, offering significantly greater strength compared to other designs. This enhanced strength helps resist breakage from shock loads or even catastrophic axle failure, giving you more confidence when you push your vehicle hard. The gears and casing are built tough, and the internals are made from 8620 alloy for added durability. This locker is specifically engineered for racing applications and fits Ford 9-inch differentials with 35-spline axles and a load bolt housing.

This locker is a substantial upgrade for vehicles like the Ford Bronco, F-150, or Mustang from the 1960s through the 1980s, provided they are equipped with the Ford 9-inch rear end and 35-spline axles. Installation will require opening up the differential housing, so be prepared with the necessary tools and potentially a differential installation kit, which typically includes bearings and seals. It's a serious piece of mechanical engineering for those who demand the most from their drivetrain.