Ford 10.5 inch Rear 4.88 37 Spline Ring and Pinion Gear

Features:

• Precision-engineered for Ford 10.5-inch differentials
• Optimized 4.88 gear ratio for improved torque
• 37-spline design for added strength
• Ideal for towing and off-road performance
• Enhances low-speed power and throttle response
• Made from high-grade steel for durability
• Heat-treated for superior strength and longevity
• Designed for smooth, quiet operation
• Improves drivability with larger tires
• Preferred by installers for easy setup
• Backed by a 2-Year Manufacturer Warranty
• Fits 2011-2022 Ford F-250 & F-350

Upgraded 4.88 Gear for Ford 10.5 Rear Differential

If you’ve upgraded to larger tires or need more low-end power for towing and off-road use, swapping to the right gear ratio is essential for getting the most out of your truck. The Revolution Gear & Axle 4.88 Ring & Pinion Gear Set is designed for the Ford 10.5-inch rear differential, found in 2011-2022 Ford F-250 and F-350 Super Duty trucks. This gear set restores power where you need it most, helping your truck accelerate smoother, handle heavier loads with less effort, and maintain the correct RPM range for optimal performance. The 4.88 gear ratio is a major step up from factory options like 3.73s or 4.30s, offering stronger low-end torque for improved towing, throttle response, and off-road capability. If you've installed 35-inch or larger tires, your stock gearing may struggle to maintain power, leading to sluggish acceleration and excessive strain on your transmission. The 4.88s compensate for larger tires by keeping your engine operating in its ideal power band, reducing unnecessary downshifting and improving overall drivability. Compared to even shorter gears like 5.38s, the 4.88s offer a solid balance between low-end power and highway usability, making them a great option for daily-driven work trucks, off-road builds, and heavy-duty towing applications.

Heavy-Duty Steel Construction Engineered for a Perfect Fit

Durability is just as important as performance, and this ring and pinion set is built to handle extreme conditions. Manufactured from high-quality 8620 steel and heat-treated for maximum strength, this gear set is engineered to withstand the stress of heavy towing, off-road abuse, and daily driving. The 37-spline design adds extra durability, making it an excellent upgrade for high-torque applications. What's more, Revolution Gear & Axle is known for producing installer-friendly components, making setup smoother and more precise compared to lesser aftermarket brands. This bolt-in replacement is designed to fit seamlessly into the Ford 10.5-inch differential, and a professional install with proper gear setup is recommended to ensure quiet operation and long-term reliability. Following the correct break-in procedure will also help extend the life of your gears and prevent premature wear. recommended.

Fits:

• 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Ford F250 Super Duty
• 2011, 2012, 2013, 2014, 2015, 2016 Ford F350 Super Duty

Specifications:

• Gear Rotation: Standard
• Pinion Splines: 37
• Ring Gear Diameter: 10.5 Inch
• Ring Gear Bolt Thread: 12 x 12MM
• Carrier Break: No Carrier Break
• Cover Bolts: 12 Bolt
• Differential: Ford 10.5 Inch
• Material: 8620