Trac Loc Differential Ford 9in w/31-spl axles

The Trac Loc Differential Ford 9in w/31-spl axles by YUKON GEAR AND AXLE is a performance-grade locking differential engineered for serious off-road enthusiasts and high-performance truck builders who demand maximum traction control. This differential upgrade replaces the factory open design, delivering positive lock engagement across both wheels during acceleration and cornering, eliminating wheel spin and ensuring predictable power delivery on technical terrain. Whether you're tackling rock crawls, desert runs, or maximizing launch grip in a modified truck, the Trac Loc provides the mechanical advantage needed when factory traction control falls short.

Built to handle 31-spline axle shafts, this Trac Loc uses a robust clutch-pack locking mechanism that engages smoothly under load and disengages during coasting for improved street manners compared to solid lockers. The differential housing accepts standard Ford 9-inch internals and requires no modifications to existing axle tubes or housings, making installation straightforward for experienced builders. YUKON GEAR AND AXLE backs this unit with proven durability in extreme applications—the internal clutch design prevents binding while providing instantaneous lock-up when wheel slip is detected, maintaining consistent torque distribution to both rear wheels.

This differential is ideal for Ford-based platforms running a Ford 9-inch rear axle with 31-spline shafts, including vintage muscle cars, modern restorations, and custom off-road builds. The 21.1-pound assembly fits within standard Ford 9-inch mounting points, and proper installation requires balanced break-in procedures to seat clutch material and ensure longevity. Compatible with both street and competition use, the Trac Loc Differential delivers the traction control your build demands without sacrificing drivability.