This Yukon Ford 9" Ring and Pinion Gear Set is designed for one of the most widely used and adaptable axle platforms in performance, off-road, and racing applications. Re-gearing a Ford 9" allows you to match axle ratio to tire size, horsepower, and intended use, whether you're building a street truck, drag car, or dedicated off-road rig. Proper gear selection improves acceleration, restores lost power from larger tires, and optimizes overall drivetrain efficiency.

The Ford 9" platform is known for its removable third member design, making gear changes and setup more accessible compared to other axles. This gear set is built to work with standard Ford 9" carriers and requires proper setup including pinion depth, backlash, and bearing preload to ensure long life and quiet operation under load.

Includes:

• Ford 9" Ring & Pinion Gear Set
• Available Gear Ratios: 3.00, 3.25, 3.50, 3.70, 3.89, 4.11, 4.30, 4.56, 4.86, 5.13, 5.29, 5.43, 5.67, 6.00, 6.20, 6.33, & 6.50

Specifications

• Fits Ford 9" differential
• 9.00" ring gear diameter
• 28-spline pinion
• 10-ring gear bolt pattern
• Precision cut gear teeth for consistent contact pattern
• Designed for street, off-road, and racing applications

Fitment

• Suitable for front or rear applications depending on build

Tech Insight

The Ford 9" remains one of the most versatile axle platforms due to its strength, aftermarket support, and ease of setup. With a wide range of available gear ratios, it can be tuned for anything from highway cruising to extreme off-road crawling or drag racing.

Lower numerical ratios such as 3.003.70 are better suited for highway use, while higher ratios like 4.56 and up are ideal for larger tires, off-road performance, and high torque applications. Because of the removable third member design, many builders keep multiple gear sets or pre-built third members to quickly adapt to different driving conditions.