US Gear, a brand of AxleTech International, manufactures high performance ring and pinion gears in Chicago, Illinois. For over 50 years, racing professionals and performance enthusiasts have trusted US Gear as the industry standard for high quality aftermarket gears.

US Gear high performance ring and pinions deliver the highest quality in the industry with quiet performance, clean installation and setup, durability, and longevity. Ring and pinion gear sets are available in many ratios for GM, Chrysler, Ford, and Dana differentials.

US Gear specializes in advanced engineering, manufacturing technology, and precise heat treat processes. All manufacturing processes take place in its Chicago-based facility. US Gear also manufactures gears to support the AxleTech product line for commercial heavy-duty vehicles and defense applications.