Yukon Gear High Performance Gear Set For GM 8.5in & 8.6in in a 3.90 Ratio Cooling>Coolants you can be confident they

you can be confident they are certified for use in competitive motorsports

5L 4-cylinder DOHC Main Stud Kit

0deg to +5

CNC-machined from billet 6061 aluminum

New compressor and turbine wheels have been designed to give you increased airflow without compromising on low end response

Yukon Gear High Performance Gear Set For GM 8.5in & 8.6in in a 3.90 Ratio Cooling>Coolants you can be confident theyYukon 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