Revolution Gear & Axle D44JK-488 4.88 Ratio Ring & Pinion for07-18 Jeep Wrangler

Vehicle Fitment

• 2007-2018 Jeep Wrangler JK (Sport, Sahara, Rubicon) - rear Dana 44 axle
• Fitment beyond 2018 and 2025 unconfirmed at time of listing.

Features

• Precision-machined ring &-pinion gear set built to OEM standards.
• 4.88 gear ratio - ideal for larger tires, off-road use and improved torque delivery.
• Heavy-duty construction from 8620 steel for enhanced durability under load.
• Designed for smooth, quiet operation with minimal gear-whine.
• Direct fit for Jeep JK Dana 44 rear differential - no modifications required.
• Suitable for both daily driving and serious off-road/trail use.
• Backed by a 2-year limited manufacturer warranty.
• Replaces stock ratio for better performance with lifted setups or heavy loads.

Specifications

• Part number: D44JK-488
• Gear ratio: 4.88
• Axle application: Dana 44 rear
• Vehicle series: Jeep Wrangler JK (2007-18)
• Ring gear material: 8620 steel alloy
• Recommended for 4WD configurations with stock or modified rear axle.
• Carrier break: fits Dana 44 configuration typical of 2007-18 JK models.

Included Components

• 1x Ring gear
• 1x Pinion gear
• Ring gear bolts (hardware) included

Product Description

The Revolution Gear & Axle D44JK-488 gear set is a high-performance upgrade for the rear Dana 44 differential found in the 2007-2018 Jeep Wrangler JK. The 4.88:1 numeric ratio provides improved torque multiplication and better control when running larger tires, towing or tackling off-road terrain. Manufactured using premium 8620 steel and precision heat-treating, this ring &-pinion set is designed to withstand the rigors of demanding use while delivering smooth, quiet operation.

Installation is straightforward for experienced installers familiar with differential setups: remove the old gearset, check carrier break and spline counts, install the matched ring &-pinion set, set backlash and preload correctly, and run-in per manufacturer guidelines. After upgrade, owners typically observe lower engine RPMs at cruising speeds, stronger low-end torque and enhanced performance during acceleration and trail work.

Fitment is confirmed for the JK generation (2007-18) Jeep Wrangler with Dana 44 rear axle; however, complete engine/trims/drivetrains year-by-year across 2025 is unconfirmed at this time. Always verify your vehicle's axle code, carrier break, spline count and compatibility with this gear ratio before purchase.