The Yukon Gear Grizzly Locker for Ford 9-inch axles with 31 splines is a high-performance mechanical positive-locking differential designed for demanding off-road and racing applications. Constructed with a robust casing and advanced gear tooth design, it provides exceptional traction and durability. The locker delivers 100% power to both tires, enabling maximum grip during rock crawling, trail running, off-road racing, and drag racing. Its patented design features larger radius inner clutch teeth, offering up to 350% greater strength compared to back-cut designs. These larger teeth resist breakage from shock-loading and catastrophic axle failures, making it a reliable choice for serious driving conditions and high-stress environments.
This locker is engineered specifically for Ford 9-inch axles with 31 spline axles, making it suitable for a range of performance vehicles used in off-road and racing scenarios. It is a direct replacement or upgrade for stock differentials in compatible Ford 9-inch setups, providing enhanced traction and strength. Installation typically involves replacing the existing differential components with this unit, which is ideal for off-road enthusiasts and racers seeking maximum durability and performance. The kit includes the locker assembly, designed to withstand intense driving conditions and deliver consistent, reliable engagement during aggressive driving.
