Chevrolet 1500 Differential Install Kit - Revolution Gear & Axle - 5.13 Ratio - `98-`08 is a direct-fit gear package for GM 1500 trucks from 1998 through 2008. This kit provides a 5.13 final drive ratio intended for drivers who need stronger low-end torque and improved towing responsiveness.

Made by Revolution Gear & Axle for GM IFS differentials, this package is specified for GM 8.6" and GM 8.25" independent front suspension applications common to 1998–2008 Chevrolet 1500 models. The 5.13 ratio increases torque multiplication at the wheels compared to higher numerical ratios, helping with hill climbs and heavy loads when paired with the correct supporting modifications and installation. Professional installation is recommended to ensure correct backlash, preload and pattern setup.

Features

• Revolution Gear & Axle gear package
• 5.13 final drive ratio
• Fits 1998–2008 Chevrolet 1500 IFS (GM 8.6" and GM 8.25")
• Designed for direct replacement in compatible GM differentials

If you have questions about fitment, required carrier bearings, or whether this ratio matches your build, call us — we’re happy to help. We offer installation and customization services at our two locations: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) to discuss your truck or schedule service.

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

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