Yukon Gear Grizzly Locker / Fits Dana 44 / 30 Spline / 3.73 & Down

This Yukon Gear Grizzly Locker is a mechanical positive-locking differential designed for serious off-road use, rock crawling, trail running, and even drag racing. When you open the box, you'll find the locker unit itself, ready to be installed into a Dana 44 axle with 30 spline axles and a gear ratio of 3.73 or numerically lower (like 4.10 or 4.56). This is a hardcore piece of equipment built for demanding conditions.

What sets the Grizzly Locker apart is its robust internal design, featuring patented innovations that make it tougher than many other lockers. 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. These larger teeth are also better at resisting breakage from sudden shock loads or catastrophic axle failures. The unit uses 8620 internals for added strength and is assembled in the USA. It provides 100% power to both tires, ensuring maximum traction, but it still allows for disengagement when you're negotiating turns, making it more manageable on the street than a spool.

This locker fits a wide range of vehicles, including many Chevrolet and Dodge trucks and SUVs from the 1960s through the early 2000s. If you're building a rig for extreme off-road adventures or need maximum traction for racing, the Grizzly Locker is a solid option. Keep in mind that installing a locker is a complex job that requires specialized tools and knowledge, so it's best to consult the manufacturer's installation instructions or have a professional mechanic handle it.