Suncoast Converters Ultimate XST Kit w/ 1-1/4 29 Spline Super Alloy Shaft Complete Pump COA-22880

The Coan Racing COA‑22880‑AL‑LU “Ultimate XST Lock‑Up” Kit is a premium front-end transmission package designed for high-performance Turbo Hydramatic 400 (TH400) builds using XST-style torque converter systems. This all-in-one kit includes a rugged 1-1/4″, 29-spline input shaft engineered for maximum strength, paired with a complete aluminum pump assembly featuring a 32 spline heat-treated bolt-in stator, matched to support lock-up converter operation. The package also includes a 7075 billet aluminum forward drum capable of housing up to nine friction plates, providing a lightweight yet durable foundation for aggressive power handling.