SKU: DET913A586
MPN: 913A586
The Detroit Truetrac - Ford 9in 31-Spline is a limited-slip differential designed for street and light track use on rear-wheel-drive vehicles equipped with Ford 9-inch rear axles. This unit is ideal for muscle car enthusiasts and those building classic hot rods or performance street machines, as it replaces an open differential to enhance traction during acceleration.
Utilizing a friction-based design, the Truetrac limits wheel spin without the harshness associated with locking differentials. It employs helical gear technology that automatically biases torque to the wheel with the most traction, progressively locking as load increases. This mechanical design is maintenance-free, providing consistent performance across various driving conditions.
Enthusiasts upgrading vehicles like Fox-body Mustangs, Fairlanes, Rancheros, and vintage hot rods will find significant benefits from this carrier. The 31-spline specification ensures compatibility with Ford 9-inch axle shafts commonly found in 1960s–1980s Fords and popular retrofit platforms, making it a reliable choice for performance upgrades.
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