Detroit Truetrac - Ford 8.8in 15- Mustang

The Detroit Truetrac differential carrier for Ford 8.8-inch axles is a precision limited-slip differential designed to deliver controlled traction without the complexity of locking mechanisms. Built for street performance and weekend track duty, this 34-spline unit fits directly into Mustang rear axles and similar Ford applications where balanced power distribution matters. Whether you're upgrading from an open differential or replacing a worn unit, the Truetrac bridges the gap between drivability and performance, eliminating the dreaded inside-wheel spin while preserving smooth cornering characteristics.

The Detroit Locker Truetrac uses a friction-based clutch pack system that automatically adjusts slip based on driving conditions, sending more power to the wheel with better traction during acceleration while allowing normal differential action during turns. This design eliminates the chattering and noise of mechanical lockers, making it ideal for street-driven Mustangs. The 34-spline design ensures compatibility with standard Ford 8.8-inch rear housings and accepts stock axle shafts without modification. Weighing 27.17 pounds, the carrier maintains proper weight distribution and integrates seamlessly with existing ring-and-pinion setups.

Mustang owners, street racers, and enthusiasts running forced-induction or naturally aspirated power benefit most from the Truetrac's balanced approach to traction control. Installation requires removing the rear differential cover and unbolting the original carrier—a task within reach of any competent home mechanic with basic tools. The unit pairs excellently with upgraded ring-and-pinion sets, allowing builders to optimize both gear ratio and traction simultaneously. Proper break-in procedures and quality differential fluid are essential to ensure the clutch pack beds in correctly and delivers years of reliable performance.