SKU: DET913A555
MPN: 913A555
The Detroit Truetrac - GM 8-7/8 12-Bolt 30-Spline is a no-slip limited-slip differential designed for drivers who demand controlled traction without the noise and maintenance headaches of a full locker. This differential is ideal for street-driven trucks and performance vehicles that see occasional spirited driving.
Built for GM's 8.7-inch 12-bolt rear axle, the Truetrac uses a helical-gear design that automatically transfers power to the wheel with more traction without requiring driver input or electronic controls. Unlike clutch-type limited-slip units that fade under heat, the helical design maintains consistent bias ratios across various driving conditions, ensuring reliability in street and light off-road use.
This differential is best suited for daily drivers and weekend warriors looking for predictable handling and improved cornering grip while maintaining everyday drivability. It fits directly into the factory 8-7/8 housing, requiring only standard rear-diff service procedures during installation, with no modifications needed to existing axle shafts or housing.
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