Suncoast Converters 300M Alloy Input Shaft 12-5/8 - Shot Peened COA-12801A

The Coan Racing COA‑12801A 300M Alloy Input Shaft (Shot Peened, 12-5/8″) is a premium-performance component meticulously engineered for GM Powerglide transmissions configured with 1.82, 1.90, 1.94, 1.98, and 2.08 low-gear ratios. Crafted from high-strength 300M alloy and treated with shot peening, this shaft offers superior fatigue resistance and durability for high-load applications. It fits seamlessly into cases matched to these ratios and delivers robust performance without requiring gearbox modifications. Ideal for high-horsepower street builds and competitive drag setups, the COA‑12801A enhances drivetrain resilience, ensuring dependable power transfer and extended component life in demanding Powerglide applications.