Differential Gear and Install Kit

The USA Standard Gear ZGK2063 is a comprehensive gear and install kit package engineered to significantly enhance differential performance. The 4.56 ratio provides a more aggressive gear ratio for improved performance. It is built for long life, is completely rebuildable, and features a high-strength nodular case with forged 4320 chromoly spider gears and composite clutches. The kit ensures all necessary components are included for a complete differential upgrade, such as axle bearings and seals, carrier bearings and races, pinion nut and seal, crush sleeve or preload shims, ring gear bolts, carrier and pinion shims, brush, marking compound, and Loctite, as well as a cover gasket or silicone. This kit is intended for applications with a 10-bolt rear cover and a 10-bolt ring gear. The ring gear diameter is 8.8 inches, and the inner pinion bearing has a 3.544" outside diameter. USA Standard Gear adheres to rigorous in-house quality testing to ensure all gears meet dimensional, material, and fitment standards. The ZGK2063 is a one-stop solution for upgrading traction and performance in a single part number.