Revolution Gear & Axle Ring & Pinion Set for GM 10.5" 14-Bolt Rear Axle (5.38 Ratio, Thick)

This Revolution Gear & Axle ring and pinion is built for the GM 10.5 inch 14-bolt rear axle in a 5.38 ratio with a thick ring gear. It is the gear set on its own, designed for heavy and big-tire applications.

The thick ring gear is the key feature: it fits 4.10 ratio and numerically lower carriers, so you can run a deep 5.38 without swapping to a higher carrier. The set uses a 30-spline pinion and a 10.5 inch ring gear in 8620 alloy steel with a 14-bolt cover pattern, cut and heat treated to meet or exceed original equipment standards.

A 5.38 is a deep ratio chosen by owners running very large tires, heavy loads or dedicated off-road rigs who need maximum mechanical advantage at the wheels. Confirm your carrier is in the 4.10-and-down range to take the thick gear.

This is a gear set only. Setup bearings, crush sleeve, shims and pinion seal are sold separately, and no carrier or locker is included. Pair it with a Revolution GM 14-bolt master install kit and have a qualified installer set pinion depth, backlash and preload.

Backed by a 2-year warranty against manufacturing defects, this thick-cut 5.38 set is a strong upgrade for a big-tire or heavy-haul GM 14-bolt build.