Jeep Wrangler Differential Install Kit - Front + Rear - Revolution Gear & Axle - Koyo 4.88 Ratio - `03-`06. This install kit supplies a matched front and rear 4.88 gear package from Revolution Gear & Axle using Koyo components for 2003–2006 Jeep Wrangler TJ Rubicon applications. It’s intended for the Dana 44 (thick) front and rear setup found on those models.

The package includes properly matched ring and pinion gears sized at a 4.88 ratio to restore or change final drive characteristics on TJ Rubicon Dana 44 axles. Using a matched gear set helps maintain correct contact pattern and longevity compared to mismatched components. This option is appropriate for owners planning tire upgrades, off-road use, or who want stronger, lower gearing for trail driving while retaining OEM-style fitment for the specified years and axles.

Features

• Koyo 4.88 ring & pinion gear ratio (front + rear)
• Revolution Gear & Axle matched gear package
• Application: 2003–2006 Jeep Wrangler TJ Rubicon — Dana 44 (thick) front & rear
• Designed for professional installation; helps restore correct gear contact pattern

Ready to help finalize your build? Call us with any questions or to confirm fitment and installation options. We have two installation and customization locations in Austin, Texas and the Los Angeles, California area and offer on-site installation. 512-982-9393 (TX) • 562-981-6800 (CA)

If you are thinking about purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.