Suncoast Converters Xtreme XST-3 Kit w/ 1-1/4 29 Spline Super Alloy Input Shaft Complete Cast Iron Pump COA-22881

The Coan Racing COA‑22881 "Xtreme XST‑3" Kit is a race-ready transmission solution built for Turbo Hydramatic 400 applications running with XST-style torque converters. Precision-engineered in the USA, this kit includes a stout 1-1/4″, 29-spline “Super Alloy” input shaft delivering exceptional torsional strength, paired with a durable cast-iron pump assembly that features a 32-spline, heat-treated bolt-in stator designed to withstand high pressure and repeated stress cycles. At its core, the package features a billet steel forward drum capable of handling up to nine friction plates, providing a strong and responsive front-end clutch hub optimized for aggressive launches and high torque build-ups. Designed for direct installation into stock TH400 transmission cases, the kit avoids complex case modifications and pairs seamlessly with XST-compatible converters. For serious bracket, drag, or pro-street builders looking for a durable, high-quality front-end that improves clutch support, hydraulic flow, and drivetrain reliability, the COA‑22881 offers a turnkey solution engineered to meet the demands of extreme performance builds.