The Speedmaster PCE637.1001 is a billet steel forward clutch hub engineered as a direct replacement upgrade for GM Turbo 400 (TH400) automatic transmissions. Machined from billet steel, this hub offers significantly greater strength and durability compared to stock cast components, making it an ideal choice for high-performance and racing applications where factory parts are prone to failure under increased power loads.
Designed specifically for TH400-equipped vehicles, this forward clutch hub is a critical internal transmission component that helps maintain reliable power transfer under demanding conditions. Whether you're building a performance street transmission or a dedicated race unit, the Speedmaster PCE637.1001 delivers the added reliability needed to handle elevated torque and repeated hard launches.
