5.14 Ford 9in Pro Gear 28 Spline

The Richmond 5.14 Ford 9-inch Pro Gear 28 Spline ring and pinion kit delivers aggressive acceleration and off-road pulling power designed for heavily loaded vehicles and towing applications. This 5.14 gear ratio dramatically reduces engine RPM at highway speeds while maintaining strong low-end torque for challenging terrain, making it the choice for users who prioritize launch performance over top speed.

The 28-spline pinion is engineered to handle increased stress from larger tires, higher engine output, and extended towing loads. Ford 9-inch differentials are proven platforms for both street and off-road duty, and Pro Gear ring-and-pinion sets are manufactured to OEM tolerances with precision tooth profiles that ensure smooth, quiet mesh under load. This ratio requires speedometer recalibration and will impact fuel economy at highway cruising speeds; buyers should verify transmission and driveshaft compatibility before installation.

Ideal for rock crawlers, off-road recovery vehicles, farm trucks, and dedicated tow rigs, the 5.14 ratio excels when maximum torque multiplication matters more than efficiency. The kit weighs 18.04 lbs and comes complete with all necessary components for a full differential rebuild. Installation requires proper bearing setup, pattern verification, and backlash adjustment—professional installation is recommended for users unfamiliar with differential work.

Richmond's Pro Gear line represents a middle ground between OEM replacement gears and race-spec units, offering strength and durability for serious off-road and heavy-duty use without premium-tier pricing. This 5.14 Ford 9-inch pro gear set is a direct bolt-in replacement for factory differentials, making it the go-to choice for builders upgrading vehicles to handle bigger tires, deeper water crossings, and steeper grades.