5.13 Ring and Pinion Gear Set for GM 8.5"

The USA Standard Gear ZG GM8.5-513 is a ring and pinion gear set engineered to exceed OEM specifications for GM 8.5-inch and 8.6-inch differentials. This set features a 5.13 gear ratio, which provides improved acceleration and torque multiplication, making it suitable for trucks, SUVs, and performance applications. The set includes an 8.50-inch ring gear diameter, a 30-spline pinion, and 10 ring gear bolts, designed as a direct replacement for your stock components. All USA Standard Gear sets undergo rigorous in-house quality evaluations to ensure they meet strict dimensional, material, and fitment testing standards. This commitment to quality aims to restore your vehicle's axle to its original ability and function. The kit comes with one axle ring and one pinion gear. Installation of this USA Standard Gear Axle Ring and Pinion Gear Kit is straightforward and requires no drilling, cutting, or welding. It is designed as a direct replacement part, making the installation process simpler. The approximate installation time is 3 hours with a difficulty level considered simple. This specific kit is confirmed to fit 1999-2017 Chevrolet Silverado 1500 models. It is also compatible with general GM 8.5 and 8.6-inch axle models.