Richmond 8.5-Inch and 8.6-Inch Rear Axle Ring and Pinion Gear Kit; 5.57 Gear Ratio (07-13 Silverado 1500)Find parts that fit my vehicle

High-Performance Gear Set. The Richmond 8.5-Inch and 8.6-Inch Rear Axle Ring and Pinion Gear Kit with a 5.57 gear ratio is engineered to deliver reliable and precise gear engagement for GM 8.5" and 8.625" differentials. It improves torque transfer and vehicle performance by optimizing the gear ratio, making it suitable for applications requiring increased gear reduction. This kit is ideal for those seeking durability and enhanced drivetrain efficiency in demanding driving conditions.

Construction and Appearance. The ring gear is crafted from premium 8620 steel, recognized for its hardness and durability under stress. The kit includes a robust 10-bolt ring gear designed for both front and rear positions, with a pinion shaft diameter of 1.626 inches and 30 splines to ensure a secure fit. The gear teeth have a standard rotation pattern for consistent and smooth operation.

Installation. Installation requires no drilling and must be paired with a 2.73 or higher ratio carrier and a notched cross pin (part# 80-0272-1). The process is moderately challenging and recommended for those experienced with differential assembly.

Warranty. Backed by a 2-year or 100,000-mile warranty for quality assurance.

Application. Specifically designed to fit the 07-13 Silverado 1500, ensuring compatibility for upgrades or replacements in this vehicle range.

Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations.

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