5.13 Ratio 9" Ring & Pinion Gear Set

The USA Standard Ring & Pinion gear set is engineered to exceed OEM specifications for Ford 9" differentials. This set comes with a 5.13 gear ratio, offering a significant change for applications requiring enhanced torque or towing capability. Key specifications include a 9.00" ring gear diameter, a 28-spline pinion, and provisions for 10 ring gear bolts, ensuring robust engagement. Manufactured by USA Standard Gear, each set undergoes rigorous in-house quality evaluation. This meticulous testing process guarantees that the product passes dimensional, material, and fitment standards. Installation of a new ring and pinion set typically requires professional expertise and specific tools to ensure proper backlash, gear pattern, and setup, which are critical for longevity and performance. Failure to properly set up the gears can lead to premature failure. This gear set is specifically designed to fit Ford 9" differentials. While the product listing does not specify exact vehicle model years, it is crucial to verify compatibility with your specific Ford axle housing and intended application before purchase. For detailed fitment information or assistance with selecting the correct gear ratio for your vehicle's needs, Zumbrota Drivetrain offers expert technical support via phone or online chat.