Ford 9 in. 4in. 40 Spline Spool HD Pro Third Member Assembly Ratio:5.43:1 Perfect fit for high-performance needs

Perfect fit for high-performance needs

It is compatible with various triggering systems

including some strength adders found in H-beam designs

Made from high-quality cast aluminum

which include heat-treated studs with rolled threads and special nuts with built-in serrated washer faces

Ford 9 in. 4in. 40 Spline Spool HD Pro Third Member Assembly Ratio:5.43:1 Perfect fit for high-performance needsSpeedmaster Ford 9 in. third member assemblies are designed to help you get that horsepower to the ground. They include aluminumn thru bolt design center section, as well as a forged chromoly steel spool, 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.