Lock-Up Input Shaft w/ Billet Aluminum Forward Drum - 1-1/4" 29 Spline

LOCK-UP INPUT SHAFT W/ BILLET ALUMINUM FORWARD DRUM, 1-1/4 29 SPLINE

The Coan Racing CCP‑0228603D‑LU Lock‑Up Input Shaft with Billet Aluminum Forward Drum is a top-tier drivetrain upgrade engineered for high-performance Turbo 400 applications. Crafted from precision-machined billet aluminum, the forward drum is mated to a 1-1/4", 29‑spline insert‑style shaft. 

This assembly delivers substantial weight savings compared to stock cast-iron components, reducing rotational mass for improved throttle response and shift recovery. The lock-up shaft’s spline interface is engineered for durability and optimal alignment, supporting reliable engagement during high-stress racing or street performance scenarios. Built to meet the demands of serious builders and racers, the CCP‑0228603D‑LU delivers a robust, lightweight, and direct-fit solution for TH400 transmissions, offering enhanced strength, precision, and consistency for elite-level drivetrain builds.