SKU: DET914A690
MPN: 914A690
The Detroit Truetrac Ford 9in 35 Spline differential carrier represents a fundamental upgrade for serious off-road and high-performance drivers who demand consistent traction without the drawbacks of a traditional open differential. Built for Ford 9-inch rear axles, this unit replaces the factory carrier to deliver improved handling on rough terrain, during acceleration, and in challenging weather conditions. Whether you're upgrading a vintage Mustang, a modern truck, or a dedicated off-road platform, the Truetrac addresses the traction limitations that leave power wasted and one rear wheel spinning freely.
This helical-gear design operates as a true no-slip limited-slip differential, using wedge-shaped gears to automatically bias torque toward the wheel with superior grip—without requiring clutches, cones, or driver input. Unlike clutch-type differentials that can chatter or require maintenance, the Truetrac's mechanical simplicity ensures consistent, quiet operation across all driving conditions. The 35-spline design matches OEM Ford 9-inch specifications precisely, ensuring direct bolt-in compatibility and proper load distribution. Cast from durable ductile iron and engineered to handle factory power levels and beyond, the carrier weighs a compact 16 lbs and fits within standard 9-inch housing dimensions of 8.2 x 8.2 x 8.9 inches.
Mechanics and enthusiasts favor the Truetrac for restorations, street rods, and daily-driven performance vehicles where reliability and predictable handling matter. Installation requires axle removal and carrier swap—a task well within the scope of any competent technician or DIY builder with basic shop tools and rear-axle service experience. The unit pairs seamlessly with factory or aftermarket ring-and-pinion sets and works across a wide range of gear ratios, making it ideal for both streetable platforms and aggressive build-outs. For drivers seeking a quiet, maintenance-free alternative to open or locking differentials, the Detroit Truetrac Ford 9in 35 Spline delivers dependable traction control that lasts for decades.
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