Yukon Ring & Pinion High Performance Gear Set for GM CI in a 4.11 ratio

Yukon Ring & Pinion High Performance Gear Set for GM CI in a 4.11 ratio Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacting specifications and quality standards. Yukon offers its Y.E.S. Plan, a lifetime, comprehensive, no-questions-asked protection plan covering your gear set for as long as you own your vehicle. Whether you’ve added tons of horsepower under the hood, upgraded to bigger tires, are just want to optimize the traction performance of your ride, Yukon offers the widest selection of gear ratios on the market to accommodate every need. •Fits 1963-1979 Corvette •8.20" ring gear diameter •30 spline pinion •4.11 ratio •Thick gear for 3.90 and down carrier Technical Notes •This ring & pinion set has a 30 spline pinion. '63 & '64 Corvettes came stock with a 17 spine pinion. Please verify your pinion spline count prior to ordering.