4.86 Ratio 9in Ford

The 4.86 Ratio 9in Ford Ring and Pinion from MOTIVE GEAR is engineered for serious off-road and high-performance enthusiasts who demand maximum torque multiplication. This ring and pinion set is specifically designed for 9-inch Ford differentials, enhancing your vehicle's acceleration and crawling capability by improving engine torque transfer to the wheels at lower speeds.

MOTIVE GEAR manufactures precision-cut hypoid gears using OEM-grade materials and advanced tooth geometry, ensuring smooth engagement and durability under extreme loading conditions. The 4.86 final drive ratio means the engine crankshaft must complete 4.86 rotations for the wheels to complete one full rotation, providing a mechanical advantage for demanding applications where stock gearing may fall short.

This deep reduction is particularly beneficial for vehicles equipped with larger tires or higher-horsepower engines, where stock ratios can lead to excessive engine RPM at cruising speeds. The ring and pinion assembly is compatible with Ford 9-inch third-member housings found in classic Mustangs, Broncos, pickup trucks, and custom hot rods, making it an excellent choice for off-road and towing applications.