Rough Country - 53051311 - Dana 30 5.13 Ratio Ring & Pinion Gear Set (Wrangler JK/JKU) for Jeep: 07-18 Wrangler JK 4WD, 07-18 Wrangler Unlimited JK 4WD Features: Regain lost power and torque from installing larger tires; Forged 8620 steel; Heat treated; 10-Year Manufacturer's Warranty Fits: 2007-2016 4WD Jeep JK Wrangler; 2007-2016 4WD Jeep JK Wrangler Unlimited; Dana 30 Axles ONLY Notes: Master install/bearing kit sold separately. Kit Contents: Ring gear, Pinion gear Specs: SKU: 53051311