Yukon Gear High Performance Gear Set For Ford 9in in a 4.30 Ratio

Starting with the gear tooth surface finish, Yukon engineers have designed this ring and pinion set to reduce friction and heat. This is crucial for high torque conditions and extended use, like long races or when you're pushing your vehicle hard. They use high-grade steel for both the ring and pinion gears, ensuring they can handle the demands of added horsepower and larger tires. This set is designed for the Ford 9-inch differential, a popular choice for many classic and performance vehicles.

This particular set offers a 4.30 gear ratio, which is a significant change from stock for many applications. A lower numerical ratio like 4.30 generally improves acceleration by allowing the engine to reach higher RPMs more quickly. It's a common choice when upgrading to larger tires, as it helps bring the final drive ratio back closer to a more optimal range for performance. The ring gear has a 9.00-inch diameter and uses 10 bolts to secure it, with a 28-spline pinion shaft that fits directly into Ford 9-inch housings.

Yukon Gear & Axle backs their high-performance gear sets with a 1-year warranty against manufacturing defects. They also offer an optional Y.E.S. Plan, which provides lifetime, comprehensive protection for your gears as long as you own the vehicle. This set is designed to fit a wide range of Ford vehicles equipped with the 9-inch rear end, including models like the Ford Bronco, F-150, and Mustang, among many others. It's a solid option if you're looking to re-gear your differential for improved performance or to compensate for tire size changes.