The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle. Core Features: Automatic engagement Unmatched strength and durability Maintenance free Works in forward and reverse Front and rear axle applications Optimized torque bias ratios deliver maximum vehicle acceleration and handling *Image is Representative, Actual Item May Vary