"SUPER SHAFT" AEROSPACE ALLOY INPUT SHAFT, W/OEM DRUM (REQUIRES BUSHING IN TORQUE CONVERTER)

The Coan Racing COA‑22810A “Super Shaft” Aerospace Alloy Input Shaft is an elite, race-grade upgrade engineered for Turbo Hydramatic 400 transmissions. Meticulously crafted in the USA from premium aerospace-alloy material, it combines outstanding strength with reduced rotational mass to enhance throttle responsiveness and durability under extreme load conditions. Requires a dedicated bushing within the torque converter to ensure smooth fit and long-term reliability.

Built for serious race or pro street performance use, the “Super Shaft” withstands aggressive torque spikes and repeated high-RPM cycles often encountered in bracket, heads-up, or heavy-duty competition environments. Its precision-machined construction ensures straight spline profiles and tight tolerances, minimizing potential flex and ensuring peak drivetrain efficiency. The COA‑22810A delivers a cohesive performance package geared for maximum power handling and rapid shift recovery.

By installing it and pairing it with the required torque-converter bushing, builders gain a transmission component that accelerates responsiveness and reinforces drivetrain longevity without sacrificing compatibility with existing TH400 configurations.