Speedmaster Ford 9 in. third-member assemblies are designed to help you get that horsepower to the ground. They include an aluminum thru-bolt design center section, a forged chromoly steel spool, a 1350 series yoke, Daytona pinion support, and gear ratio. Whether you're assembling a daily driver, street rod, or race car, Speedamster's third-member assemblies will provide the durability that your vehicle deserves.