SKU: DET912A587
MPN: 912A587
The Detroit Truetrac for Ford 9 inch 28-spline differentials represents the gold standard in limited-slip carrier technology for high-performance and daily-driven vehicles alike. Built for enthusiasts who demand both street manners and track-ready traction without sacrificing drivability, this clutch-pack limited slip differential replaces the stock open carrier to deliver controlled power delivery to both wheels under acceleration, cornering, and off-throttle conditions. Whether you're building a restomod, upgrading a performance truck, or seeking reliable traction for weekend autocross duty, the Truetrac delivers the predictable handling and load-sharing characteristics that modern driving demands.
This Detroit Locker-Tractech carrier uses a precision-engineered clutch-pack design with steel internals to modulate torque distribution proportionally—meaning it biases power to the wheel with grip without the abrupt engagement or chatter associated with locking differentials. The 28-spline count ensures compatibility with a wide range of Ford 9-inch housings commonly found in muscle cars, trucks, and vintage platforms, while the 3.25 ratio specification and higher accommodates modern street driving and fuel efficiency concerns. At 17.13 lbs, the carrier is engineered for durability under sustained load, with calibrated clutch packs that progressively lock as lateral load increases, providing seamless torque vectoring without shocking the driveline or compromising on-center steering feel.
Ideal for street-strip cars, restorations, and truck builds where factory open differentials limit traction and handling balance, the Detroit Truetrac for Ford 9 inch 28-spline delivers the responsiveness expected by serious mechanics and performance enthusiasts. Installation requires removal of the existing carrier assembly and proper setup with fresh gear oil and a quality friction modifier; professional installation is strongly recommended to ensure correct backlash, bearing preload, and clutch pack calibration. This carrier works with any Ford 9-inch housing regardless of year or application, making it the versatile foundation for any build that demands consistent, predictable traction without compromise.
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