SKU: RIC69-0171-1
UPC: 698231706893
MPN: 69-0171-1
The Richmond 5.13 8.5in 10 Bolt GM Ring and Pinion Kit is designed for serious truck and performance vehicle builders who are upgrading or rebuilding GM 8.5-inch rear axles. This complete assembly allows for precision gear ratio tuning to optimize acceleration, fuel economy, or towing capacity based on the specific needs of the vehicle.
Manufactured from high-strength alloy steel, this kit features precise tooth geometry and surface finishing that ensures smooth engagement, reduced noise, and extended service life under load. The 5.13 ratio (5.13:1) provides aggressive low-end torque multiplication, making it ideal for acceleration, off-road terrain, or heavy towing scenarios.
This ring and pinion kit is compatible with all GM 10-bolt 8.5-inch differential housings, making it a direct fit for classic and modern Chevrolet and GMC trucks, SUVs, and performance vehicles equipped with this rear axle. Each kit comes pre-assembled for easy installation, ensuring correct mesh patterns and backlash for optimal performance.
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