Ford 9in Ring and Pinion Lightened 633 Ratio

The Ford 9in Ring and Pinion Lightened 6.33 Ratio from PEM is designed for serious hot rodders, drag racers, and street performance enthusiasts who require aggressive acceleration and reliable gear mesh under high-load conditions. This gear set is specifically made for custom-built Ford 9-inch differentials, prioritizing weight reduction and quick spool characteristics.

The lightened design of this gear set enhances responsiveness for launch control and mid-range performance without the rotational inertia penalty typical of conventional ring-and-pinion assemblies. The precision-cut gear teeth ensure consistent backlash control and minimal chatter, which are essential for durable power transfer in high-horsepower applications.

Ideal for applications requiring fast acceleration, this gear set is compatible with naturally aspirated, supercharged, or turbocharged engines. The Ford 9-inch housing accepts this drop-in ring-and-pinion set without frame modifications, maintaining street-driven drivability at highway speeds.