Description
A 3.89 ring and pinion ratio gives you the muscle you need for street-strip performance without sacrificing highway cruising. If you’re running a Ford 9-inch and want quicker acceleration off the line while maintaining reasonable RPM on the highway, this Allstar kit delivers the mechanical advantage to make it happen. The 28-spline pinion ensures reliable power transfer under aggressive driving conditions.
- Ford 9-inch housing
- 3.89:1 ratio
- 28-spline pinion
- Ring and pinion kit
- Bolt-on installation
- OEM-compatible gearing
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