Dana S110 Ring and Pinion

Dana S110 ring and pinion gears are heavy-duty upgrades designed for commercial and vocational trucks that demand serious torque capacity. The Dana S110 axle — most commonly found as the rear axle in 2005–2016 Ford F-450 and F-550 Super Duty trucks, along with various Dodge, GM, and other Class 4–5 medium-duty delivery, construction, and vocational vehicles — features a large 12.25" (311 mm) ring gear, 34-spline pinion shaft, dropout-style 3rd member design, and 12 ring gear bolts for exceptional strength and easy service.

The ratios available on this page (3.73, 4.11, 4.30, 4.56, and 4.88) are ideal for compensating for larger tires, restoring low-end power, improving acceleration under load, or optimizing crawl performance in towing and off-road commercial applications. High-quality aftermarket sets from brands like Yukon Gear, Revolution Gear, USA Standard Gear, Motive Gear, or genuine Spicer fit the Dana S110 precisely but require a master install kit (bearings, shims, seals) for accurate backlash, preload, and contact pattern to ensure quiet, long-lasting operation.

Pairing these gears with upgraded axle shafts, heavy-duty bearings, or differential covers helps the Dana S110 handle increased torque and abuse reliably within its 15,500 lb capacity rating. Whether you're re-gearing a Ford F-450/F-550 for better towing performance, strengthening a medium-duty work truck, or maintaining a commercial fleet vehicle, browse our Dana S110 ring and pinion sets to find the ratio and quality that matches your project.

Dana S110 ring and pinion gears are available in ratios: 3.73, 4.11, 4.30, 4.56, and 4.88.