Yukon Gear & Axle SL Spartan Locker Dana Spline Differential Spool

The Yukon Gear & Axle SL Spartan Locker is a Dana spline differential spool. It replaces the factory differential carrier and gears with a solid, fully locked axle. Both axle shafts turn together at the same speed. This gives maximum traction for off-road, rock crawling, trail, drag racing and other severe-duty use. Some buyers search for it as a mini spool, a locker spool or a solid axle spool.

Key Features:

• Full-time positive lock: Both wheels get equal power with no differential action, so traction is the same on both sides.
• Dana spline design: It is made for Dana-style axle assemblies and works with Dana spline axle shafts.
• Strong construction: Yukon builds it from high-strength alloy steel. It is meant to handle the torque and abuse of heavy-duty builds.
• Simple, durable design: It has no clutches, springs or small internal parts to wear out or fail. That means less maintenance and higher reliability.
• Drop-in replacement: It installs in place of the stock carrier assembly. Correct ring and pinion gear setup and bearing preload are still required.

A spool suits dedicated off-road, competition and work vehicles where maximum traction matters more than street manners. A locked axle can cause tire chirping or hopping on pavement during tight turns, and it can increase tire wear. For that reason it is best for dedicated trail, race or competition use. Yukon Gear & Axle is a well-known maker of ring and pinion gears, lockers, axles and drivetrain parts for 4x4, performance and racing use.