Grizzly Locker Ford 9" 31 Spline

The Yukon Grizzly Locker is a high-performance differential component specifically engineered for Ford 9" axle housings, requiring 31 spline axles. Its construction utilizes 8620 internals, providing superior strength and durability under demanding conditions. The patented internal design is a key feature, significantly reducing the likelihood of common locker failures, which is crucial for racing applications. This locker is assembled in the USA, ensuring quality control and domestic manufacturing. Its aggressive design is tailored exclusively for racing or off-road use, and it is not recommended for standard street applications due to its nature. For installation, it requires specific carrier bearing and race numbers: LM104949 & LM104911. The product is also compatible with a 3.250 gear ratio. As a racing-specific differential, this Yukon Grizzly Locker is intended for competitive environments where extreme performance and reliability are paramount. Users should consult with technical support to ensure compatibility with their specific build project and intended use.