Revolution Gear & Axle 11-16 Ford F-250/F-350 10.5in 37 Spline Rear 4.88 Ratio Ring & Pinion Set

This kit includes the ring and pinion gears you need to change the gear ratio in the rear differential of your 2011-2016 Ford F-250 or F-350. Changing your gear ratio, especially to a numerically higher one like 4.88, is often done to compensate for larger tires. When you install bigger tires, your vehicle loses some of its original acceleration and towing power because the effective gear ratio becomes taller. A lower (numerically higher) gear ratio like 4.88 helps bring that power back by allowing the engine to spin at a higher RPM for a given road speed, improving acceleration and making towing easier.

Revolution Gear & Axle is known for making well-built drivetrain components. This set is designed for the Ford 10.5-inch rear axle, featuring 37 splines for a strong connection. The 4.88 ratio is a popular choice for trucks running 37-inch or larger tires, helping to restore lost performance. Proper installation is key for any ring and pinion set; it requires careful setup, including backlash and pattern checks, to ensure longevity and quiet operation. If you're unsure about the process, it's always best to consult a professional mechanic.