300M Alloy Input Shaft w/ OEM Drum - Use w/ COA-22812A Clutch Hub

300M ALLOY INPUT SHAFT W/OEM DRUM (LARGER SPLINES SHAFT TO DRUM), USE WITH COA-22812A CLUTCH HUB, REQUIRES COA-22433 BEARING

The Coan Racing COA‑22810B 300M Alloy Input Shaft is a hardened performance upgrade for Turbo Hydramatic 400 transmissions, featuring larger-than-stock splines that ensure exceptionally strong engagement. Built from premium 300M alloy in the USA, this shaft delivers superior strength to handle torque levels far beyond OEM limits while providing excellent durability in the most demanding environments. Designed for use with the matching Coan COA‑22812A billet clutch hub, it also requires the COA‑22433 bearing to guarantee optimal alignment and smooth rotation, ensuring the entire front-end functions as a cohesive, high-strength unit.

The COA‑22810B features larger splines that mate precisely with OEM-style drum interfaces. This design increases connection integrity between shaft and drum, reducing the likelihood of spline wear or twisting common in high-load applications. Its precision machining minimizes flex and tapering, contributing to more positive torque transfer, crisper shift recovery, and extended component life when paired with Coan’s billet drums and clutch hubs.

In high-performance setups, such as bracket cars, heavy-duty street/strip builds, or racing transmissions where durability and reliability are crucial, the COA‑22810B offers a significant upgrade in front-end strength and drivetrain confidence. Its situation‑specific design ensures compatibility and performance enhancement when used alongside the correct Coan components, making it a key piece in building a transmission capable of handling extreme power without compromise.