Excel Ring & Pinion Gear Set GM 12Bolt 3.55 Ratio

The Richmond Excel Ring & Pinion Gear Set GM 12Bolt 3.55 Ratio is designed for GM 12-bolt differentials, providing the precision and durability essential for serious drivetrain builds. This gear set is ideal for vehicles that require reliable power delivery under load, making it suitable for towing, off-road recovery, or high-performance street applications.

Featuring a 30-spline pinion gear assembly, this set is engineered to ensure secure engagement and minimal backlash during operation. The 3.55 ratio strikes a balance between acceleration response and highway cruising efficiency, making it a versatile choice for those upgrading their stock differential gearing. The 8.875-inch ring gear format adheres to the industry standard for GM 12-bolt differentials.

This gear set is particularly beneficial for trucks and SUVs where stock gearing may be inadequate for consistent towing or off-road demands. The complete kit format simplifies sourcing by pairing matched ring and pinion components, reducing the risk of incompatibility. Proper installation requires setup and backlash adjustment by qualified personnel to ensure optimal performance.