Yukon Gear Grizzly Locker / Ford 10.25in & 10.5in w/ 35 Splines

This is the Yukon Gear Grizzly Locker, a mechanical locking differential designed for Ford 10.25-inch and 10.5-inch axles with 35 splines. If you're pushing your truck hard off-road, whether it's rock crawling, serious trail running, or even drag racing, this locker ensures you get maximum traction by sending 100% of the power to both rear wheels simultaneously. It's built for demanding situations where you need reliable grip.

What sets the Grizzly Locker apart is its robust internal design. It features a patented system with inner clutch teeth that have a larger radius at the base. This design offers significantly greater strength compared to other types, helping to resist breakage from shock loads or even catastrophic axle failure. The internals are made from 8620 steel, known for its durability, and the entire unit is assembled in the USA. While it locks both wheels for ultimate traction, it's engineered to still allow for disengagement when you're negotiating turns, making it more manageable on the street than some other types of lockers.

This locker is a solid option for a wide range of Ford trucks, including models like the F-250, F-350, and E-350. It's a serious piece of mechanical engineering for anyone who needs dependable, full-time traction for their heavy-duty Ford vehicle. Keep in mind that installing a locker like this is a complex job that requires specialized knowledge and tools, and it's often recommended to replace your differential bearings and seals at the same time.