Excel Ring & Pinion Gear Set GM 10Bolt 3.73 Ratio

The Richmond Excel Ring & Pinion Gear Set GM 10-Bolt 3.73 Ratio is engineered for drivers and mechanics seeking reliable gear upgrades to enhance drivetrain performance and load-carrying capacity. This precision-machined ring and pinion set is a critical component in rear differential assemblies, directly influencing acceleration response, fuel economy, and towing capability across light-duty and mid-size trucks and performance vehicles.

Richmond's Excel line combines precision forging and advanced tooth geometry to deliver smooth, quiet operation under load while resisting fatigue and wear. The 3.73 ratio offers quicker off-the-line bite compared to stock ratios without sacrificing highway cruising efficiency or tire wear. Excel gears are manufactured to OEM tolerances and heat-treated to ensure consistent mesh patterns and extended service life even under aggressive driving or payload stress.

This set is compatible with GM 10-bolt rear differentials found in Chevrolet S-10, GMC S-15, Astro, and similar light-duty trucks/SUVs. Proper installation requires careful bearing preload and ring gear run-out setup—essential steps that separate amateur work from professional results. Whether you're building a restomod, upgrading a work truck, or fine-tuning a street machine, a quality gear ratio change fundamentally transforms how your vehicle transfers engine torque to the wheels.