Revolution Gear & Axle REV-JK-RUB-488-K 4.88 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

• 4.88:1 gear ratio designed to restore low-end torque and maintain drivability with larger tires and lifts
• Complete front and rear ring & pinion sets tailored for the JK Rubicon Dana 44/Dana 44 axle setup
• Includes Koyo master install bearing kits for both front & rear differentials - streamlined full kit
• Manufactured from premium 8620 alloy steel, heat-treated for durability under off-road conditions
• Precision-lapped gear surfaces for smooth engagement, reduced gear-whine and long service life
• Optimized for off-road, large-tire builds, heavy loads and trail use where factory gearing is inadequate
• Backed by a 2-year limited manufacturer warranty against defects
• Correct spline counts and carrier orientation for JK Rubicon front & rear axles - no crossover from non-Rubicon without verification

Specifications

• Gear ratio: 4.88:1
• 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 compatible with 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-488-K gear package is engineered for 2007-2018 Jeep Wrangler JK Rubicon models equipped with Dana 44 front and Dana 44 rear axles. With a 4.88:1 ratio, this kit restores proper driveline gearing when larger tires, lift kits or heavy usage have pushed the stock gearing beyond its ideal range.

Constructed from high-grade 8620 alloy steel and heat-treated for durability, the ring & pinion sets are precision-lapped for smooth engagement and long service life. The inclusion of full front and rear differential sets plus Koyo master install bearing kits makes this a comprehensive upgrade solution - rather than just a ring & pinion swap. This is ideal for JK Rubicon owners with lifted rigs, large-tire setups or heavy off-road use.

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