Description
A full spool locks your differential for maximum traction during acceleration, eliminating wheel slip and delivering consistent power to both rear wheels—essential for drag racing, circle track, and high-performance street applications. If you’re serious about off-the-line performance and predictable handling under hard acceleration, a spool is the most cost-effective upgrade over an open differential. This PEM unit is purpose-built for GM 8.5-inch 10-bolt housings and delivers the durability demanded by competitive and dedicated enthusiast drivers.
- Type: Full spool
- Spline Count: 30 spline
- Material: Steel
- Finish: Black powder coat
- Fitment: GM 8.5-inch 10-bolt
- Configuration: Fullsize
- Installation: Requires differential removal
- Quantity: Single unit









