Jeep Wrangler Differential Install Kit - Rear - Revolution Gear & Axle - Koyo Bearing 4.88 Ratio Gear Package - `03-`06. This kit contains the rear Dana 44 gear package and matching Koyo bearing components intended for 2003–2006 Jeep Wrangler TJ rear differentials.

Designed for enthusiasts who are rebuilding or upgrading their Dana 44 rear, this package brings matched gears and bearings from reputable suppliers to ensure proper fit and long-term compatibility. The 4.88 ring-and-pinion ratio is suitable for drivers looking to optimize drivability with larger tires or altered final drive needs. Components are engineered to meet factory specifications for fitment in the specified model years; professional installation is recommended to ensure correct setup and preload.

Features

• Revolution Gear & Axle 4.88 ring and pinion set for 2003–2006 Jeep Wrangler TJ Dana 44 rear
• Koyo replacement bearing included for correct fit and durability
• Matched gear ratio for predictable axle behavior with larger tires or modified gearing needs
• Supplied as a package to reduce parts sourcing and compatibility issues

If you have questions about fitment, installation, or choosing the right ratio for your build, call us directly. We offer installation and customization services on premises at our two locations: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) to speak with our technicians. If you’re considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

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