The Speedmaster PCE204.1067 TorqueWorm Limited Slip Differential is engineered for the legendary Ford 9-inch rear end, featuring a robust 40-spline design and built to fit the 4-inch case. This limited slip differential delivers improved traction and power distribution between the rear wheels, making it an ideal upgrade for performance street and racing applications that demand reliable, consistent grip.
Designed as a direct replacement for the Ford 9-inch housing, this unit integrates with your existing 4-inch case setup for a straightforward installation. Whether you're building a high-performance street machine or a dedicated race vehicle, the Speedmaster TorqueWorm LSD offers the durability and torque-handling capability that serious builds require.