Description
A full spool differential eliminates wheel slip and ensures both rear wheels receive equal power delivery—essential for consistent traction during hard acceleration and cornering. The PEM 9in Gear Full Spool with its proven 3.70 ratio strikes the balance between off-the-line grip and highway usability, making it the go-to choice for serious Ford 9-inch builds. This assembled, ready-to-install unit saves fabrication time while delivering the reliability that separates competitive vehicles from the rest.
- Ford 9-inch compatible
- 3.70 gear ratio
- 31-spline output
- Full steel spool
- Differential case assembly
- Pre-assembled, bolt-in
- Natural finish
- Single unit






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