RTS Ford 9 Billet Yoke is to complete the drivetrain, use one of these super strong RTS Billet Steel Yoke for maximum performance and style. When building rear-ends for race cars or trucks, people tend to forget that the yoke is the one piece that ties it all together. Don't reuse the old, beat-up OEM cast iron yoke for your build; choose billet yokes from RTS.