Dana 80 Ring and Pinion

Dana 80 ring and pinion gears are built for extreme torque and towing in heavy-duty 1-ton trucks. The Dana 80 rear axle — most commonly found in the rear of 1999–2016 Ford F-350/F-450 Super Duty (dually models), 1994–2002 Dodge Ram 2500/3500, 1988–2010 Ford E-350/E-450 vans, and some GM/International applications — features an 11.25" ring gear that bolts to the carrier with 12 × 9/16"–18 bolts, a 2.0" diameter pinion shaft with 37 splines, and is visually identified by its 10 cover bolts and "80" stamped into the housing.

The ratios available on this page (3.54, 3.55, 3.73, 4.10, 4.11, 4.30, 4.56, 4.63, 4.88, 5.13, and 5.38) compensate for larger tires, restore low-end power, improve acceleration, and maintain crawl capability during heavy hauling or off-road use. Carriers support 3.73 and numerically lower ratios on one side and 4.10 and numerically higher on the other. High-quality aftermarket sets from brands like Revolution Gear, Yukon Gear, USA Standard Gear, Motive Gear, or Spicer fit the Dana 80 precisely but require a master install kit (bearings, shims, seals, crush sleeve) for accurate backlash, preload, and contact pattern to ensure quiet, long-lasting performance.

Pairing these gears with upgraded axle shafts, heavy-duty bearings, or differential covers helps the Dana 80 handle massive torque and abuse reliably. Whether you're re-gearing a Ford Super Duty for towing, strengthening a Dodge Ram for work or off-road duty, or building a durable heavy-duty rear axle, browse our Dana 80 ring and pinion sets to find the ratio and quality that matches your project.

Dana 80 axles have a 11.250" ring gear that bolts to the carrier with (12) 9/16" – 18 bolts. The pinion has a 2.0" diameter shaft with 37 splines. This axle can be visually identified by its 10 cover bolts and a "80" stamped into the housing. The carriers available support 3.73 and numerically lower ratios and 4.10 and numerically higher ratios. Ring and pinion gears are available in ratios: 3.54, 3.55, 3.73, 4.10, 4.11, 4.30, 4.56, 4.63, 4.88, 5.13, and 5.38.