Revolution Gear & Axle GM 10-Bolt 8.5in/8.6in 5.13 Ratio Ring & Pinion Set

This Revolution Gear & Axle ring and pinion set features a 5.13 gear ratio, a notable change from stock for GM 10-bolt 8.5-inch and 8.6-inch differentials. Lowering your gear ratio like this means your engine will turn more revolutions for every rotation of your wheels. This is often done to compensate for larger tires, helping to bring your speedometer back into calibration and restore lost acceleration. The gears themselves are made from durable steel, built to handle the increased torque and stress that comes with a modified drivetrain.

When you're rebuilding a differential, especially one that's seen a lot of miles, using a well-made ring and pinion set is crucial for smooth operation and longevity. Revolution Gear & Axle is known for producing solid drivetrain components, and this set is no exception. The precision machining ensures that the gears mesh correctly, minimizing noise and wear. Installing a new ring and pinion set is a job that requires careful setup, including proper backlash and pinion depth adjustments, to ensure optimal performance and durability.

If you've added larger tires to your truck or SUV and are feeling the performance difference, changing your ring and pinion gears is a common and effective way to get that responsiveness back. This 5.13 ratio is a popular choice for those looking for a significant improvement in off-the-line acceleration and towing power, especially when paired with tires in the 35-inch to 38-inch range.