33-Spline L/W Pro-Race Spool - GM 12-Bolt

The STRANGE 33-Spline Lightweight Pro-Race Spool for GM 12-Bolt differentials is designed for serious drag racers and high-performance street competitors who require consistent launch behavior. This component replaces factory differential internals and locks both rear wheels together at the same rotational speed, maximizing traction off the line.

Built for applications where predictable power transfer is essential, the pro-race spool is the standard choice for dedicated race vehicles. The 33-spline design interfaces directly with GM 12-bolt ring gear and pinion assemblies, providing superior load-carrying capacity and durability under extreme torque loads. The lightweight construction reduces unsprung mass in the rear axle, improving suspension responsiveness during acceleration.

This spool is specifically designed for competition use, ensuring reliability and performance over on-street drivability. Strange Engineering's manufacturing tolerances guarantee a precise fit with OEM 12-bolt housings, making it an ideal choice for racers looking to enhance their vehicle's performance.