Dana 30 JK Ring and Pinion

Dana 30 JK ring and pinion gears restore power and efficiency when running larger tires on your Jeep Wrangler. The Dana 30 front axle — most commonly found in the front of 2007–2018 Jeep Wrangler JK non-Rubicon models — uses reverse cut (high pinion) gears for improved strength, better driveshaft angles, and enhanced clearance under load, but these are not interchangeable with standard cut (low pinion) Dana 30 gears from earlier Wranglers like YJ or TJ.

Common upgrade ratios include 4.10, 4.56, 4.88, and 5.13 to compensate for 33–35" tires, reducing strain on the engine, improving acceleration, and maintaining crawl capability on rocks, mud, steep inclines, or trails. High-quality sets from brands like Revolution Gear, Yukon, Motive, or Spicer are designed for precise fitment in the JK Dana 30, with 24-spline pinion counts standard. These gears demand careful installation with matching master install kits (bearings, shims, seals, crush sleeve) to ensure proper backlash, preload, and pattern for longevity.

Pairing new ring and pinion with upgraded axle shafts, heavy-duty U-joints, or differential covers helps the Dana 30 handle increased torque and abuse reliably. Whether you're fixing sluggish performance after a tire upgrade, optimizing fuel economy, or building a capable trail rig, browse our Dana 30 JK ring and pinion sets to find the ratio and quality that matches your JK non-Rubicon setup.

Dana 30 JK ring and pinion gears are available in ratios: 4.11, 4.56, 4.88, and 5.13. This differential uses reverse cut gears and it's important to note that they are not interchangeable with the reverse cut gears found in Wrangler YJ Dana 30 front axles.