Revolution Gear & Axle 4.88 Ratio Gear Package w/ Koyo Bearing: Jeep Wrangler JK Rubicon (07-18) / Grand Cherokee (05-10)

Revolution Gear & Axle Gear Package

2007–2018 Jeep Wrangler JK Rubicon / 2005–2010 Jeep Grand Cherokee

REV-JK-RUB-488-K

Overview:

The Revolution Gear & Axle 4.88 Ratio Gear Package with Koyo Bearing is a precision-engineered upgrade designed specifically for Jeep enthusiasts seeking enhanced off-road performance and durability. This gear set is tailored to fit 2007–2018 Jeep Wrangler JK Rubicon models and 2005–2010 Jeep Grand Cherokee vehicles, providing an optimal gear ratio for improved torque and power delivery.

Ideal for drivers who have upgraded tires or seek better crawling capability, this gear package restores factory-like drivability while maximizing the potential of your Jeep’s drivetrain. The inclusion of high-quality Koyo bearings ensures smooth operation and long-lasting reliability under demanding conditions.

Key Features:

This gear package combines robust materials and expert engineering to deliver dependable performance. Key features include:

• 4.88 gear ratio optimized for enhanced torque and off-road capability
• Precision-machined gears for quiet and smooth operation
• High-quality Koyo bearings for superior durability and reduced friction
• Direct fitment for 2007–2018 Jeep Wrangler JK Rubicon and 2005–2010 Jeep Grand Cherokee
• Improved drivetrain efficiency to complement larger tires and lifted suspensions
• Complete gear set designed to maintain factory gear mesh and backlash specifications
• Engineered to withstand rigorous off-road use and heavy loads

Construction & Design:

The Revolution Gear & Axle gear package is crafted from premium-grade alloy steel, heat-treated for maximum strength and wear resistance. Each gear is precision-cut using advanced CNC machining to ensure exact tooth profiles and optimal contact patterns. This meticulous manufacturing process reduces noise and vibration while enhancing gear longevity.

Koyo bearings are integrated into the design to provide exceptional load capacity and smooth rotation, reducing drivetrain stress and improving overall reliability. The package is engineered to meet or exceed OEM standards, ensuring a seamless upgrade without compromising vehicle integrity.

Installation & Fitment:

Installation of the Revolution Gear & Axle 4.88 Ratio Gear Package requires professional mechanical expertise and proper tools. The package is a direct replacement for the factory gears in compatible Jeep Wrangler JK Rubicon and Grand Cherokee models, fitting precisely without the need for modifications.

Proper installation includes setting correct gear backlash and bearing preload to ensure optimal performance and longevity. It is recommended to have the gears installed by a qualified technician familiar with differential gear setups to guarantee reliable operation and avoid premature wear.

What's Included:

• 4.88 ratio ring and pinion gear set
• Koyo bearings pre-installed or included for differential assembly
• Installation instructions and specifications for gear setup

Ideal For:

This gear package is ideal for Jeep owners who have upgraded to larger tires or seek improved torque for off-road driving and trail crawling. It suits enthusiasts who demand reliable, quiet, and efficient drivetrain performance while maintaining factory-level durability. Whether tackling rocky terrain or heavy-duty hauling, this gear set enhances your Jeep’s capability and driving experience.