4.57 Ratio 9in Ford

The 4.57 Ratio 9in Ford ring and pinion kit from Motive Gear is designed for automotive enthusiasts and mechanics looking to enhance the performance of Ford 9-inch differentials. This gear set is ideal for various applications, including classic and modern hot rod builds, street vehicles, and high-performance restorations. It offers a practical solution for those aiming to improve drivability and rear axle performance.

Manufactured using precision-forged steel, this ring and pinion set is built to withstand significant loads and heat cycles. The 4.57 gear ratio indicates that the driveshaft makes 4.57 complete revolutions for every full rotation of the wheels, making it suitable for vehicles with modern powertrains. Each tooth is meticulously cut using CNC machining to ensure tight tolerances and reduce noise, which is essential for maintaining a refined driving experience.

This complete kit includes both the ring gear and pinion gear, along with all necessary installation hardware and crush sleeve components, making it convenient for builders upgrading stock rear axle assemblies or restorers replacing worn gears. Performance enthusiasts will find this kit beneficial for recalibrating their vehicles to achieve optimal performance. It is specifically designed for Ford vehicles equipped with a 9-inch differential.