Revolution Gear & Axle REV-JK-RUB-513-K 5.13 Ratio Gear Pkg 07-18 Jeep Wranger

Vehicle Fitment

• 2007-2018 Jeep Wrangler JK Rubicon (all trims, 4WD) - Dana 44 front & Dana 44 rear differentials

Features

• 5.13:1 gear ratio engineered to enhance low-end torque and performance with larger tires or lifts
• Front and rear ring & pinion sets built for JK Rubicon's Dana 44/Dana 44 axle setup
• Includes Koyo bearing master install kits for both front and rear differentials - full rebuild kit
• Manufactured from premium 8620 heat-treated alloy steel for durability under heavy use
• Precision-lapped gear surfaces for smooth engagement, reduced gear-whine and longer service life
• Optimised for off-road builds, lifted rigs, large-tire setups and heavier loads where stock gearing falls short
• Backed by a 2-year limited manufacturer warranty against defects
• Correct spline counts and orientation for JK Rubicon front & rear Dana 44 axles - ensuring proper fit in verified applications

Specifications

• Gear ratio: 5.13:1
• Front differential: Dana 44 - pinion spline count: 24
• Rear differential: Dana 44 - pinion spline count: 24
• Material: 8620 heat-treated alloy steel
• Rotation: Standard front & rear orientation for JK Rubicon Dana 44/Dana 44 setup
• Application: Front & rear axles of Jeep Wrangler JK Rubicon only - not for Non-Rubicon or other axle configurations unless verified

Included Components

• 1x Front ring gear
• 1x Front pinion gear assembly
• 1x Rear ring gear
• 1x Rear pinion gear assembly
• 1x Front Koyo master install bearing kit (bearings, seals, shims)
• 1x Rear Koyo master install bearing kit (bearings, seals, shims)
• 1x Installation instructions / manufacturer specification sheet

Product Description

The Revolution Gear & Axle REV-JK-RUB-513-K gear package is developed specifically for the 2007-2018 Jeep Wrangler JK Rubicon models equipped with Dana 44 front and Dana 44 rear axles. With a 5.13:1 ratio, this kit improves driveline responsiveness, restores low-end performance with larger tires or lifts, and maintains smooth operation under demanding off-road or heavy-load conditions.

Constructed from high-grade 8620 alloy steel and heat-treated for enhanced durability, the ring & pinion sets are precision-lapped for quiet, long-lasting performance. The inclusion of full front and rear gear sets plus Koyo bearing master install kits means this is a comprehensive upgrade solution rather than a partial gear swap - making it ideal for JK Rubicon owners upgrading their drivetrain.

Installation should be performed by a qualified technician using the appropriate differential-setup tools - bearing preload, backlash and gear pattern must be properly set for optimal performance and longevity. Fitment is confirmed for the years listed above; coverage for other model years, axle configurations or vehicle platforms is unconfirmed at time of listing.