Jeep Wrangler TJ Gear Package - Rear - Revolution Gear & Axle - Dana 44 Thick Koyo 4.88 Ratio (03-06). This direct-fit rear gear package is built for TJ owners swapping to larger tires or seeking a factory-style replacement with a 4.88 final drive.

Revolution Gear & Axle supplies a matched Koyo 4.88 ring and pinion set engineered for the Dana 44 Thick rear used on 2003–2006 Wrangler TJs. The kit is precision ground and heat treated to meet OE-like fitment and tooth contact patterns. A 4.88 ratio helps restore proper engine RPMs and drivability when used with taller tires, reducing the need to lug the engine and helping the transmission operate more effectively under load. This package is intended for those who want a reliable, correct-fit gear swap without guessing gear sizing.

Features

• Dana 44 Thick rear housing compatibility (03–06 TJ)
• Koyo-manufactured 4.88 ring & pinion
• Matched gear set from Revolution Gear & Axle
• Precision ground, heat treated gears for correct tooth pattern
• Direct-fit replacement—professional installation recommended

If you have questions or need help confirming fitment, call us directly at 512-982-9393 (TX) or 562-981-6800 (CA). We have full installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area and can advise on companion parts like carrier bearings, seals, and tune requirements. If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

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