Ford 9" 31 Spline 24.000 in. Cut-to-Fit Axle Shaft - F-100 Large Bearing If your TH400 transmission is

If your TH400 transmission is being used in high power applications

Speedmaster machined aluminum water pump pulley nose cones are constructed from top-quality 356 aluminum alloy that's heat-treated to T6 specifications

We made our own upgraded versions

race-quality componets that are created from aircraft quality 8740 high tensile strength chromoly steel

Ford 9" 31 Spline 24.000 in. Cut-to-Fit Axle Shaft - F-100 Large Bearing If your TH400 transmission isSpeedmaster axles are manufactured using cutting edge technology and techniques. These forged steel axles are designed to fit a range of applications and are non tapered with hardened bearing seats. These axles are available in any length up to 34 inches, and they may be reduced to fit if you decide to narrow your rear end later on.