33-Spline Std. Series Spool - GM 8.5 10-Bolt

The 33-Spline Std. Series Spool for GM 8.5 10-Bolt is designed for off-road enthusiasts and street performance builders who seek enhanced traction control without electronic intervention. This mechanical spool locks the differential carrier, ensuring both rear wheels rotate at the same speed, which is crucial for performance during acceleration and cornering.

This spool features a robust 33-spline design that interfaces directly with the GM 8.5 10-bolt carrier, providing reliable mechanical lock-up across various driving conditions. The 33-spline tooth geometry helps distribute engagement forces over a larger surface area, which can reduce wear on internal components and withstand the rigors of hard launches and high-load cornering.

Ideal for those building dedicated off-road vehicles, drag racing machines, or muscle cars, this spool enhances grip on both pavement and dirt. It is specifically engineered for GM 8.5 10-bolt differentials, making it a valuable addition for performance-focused builds.