BILLET ALUMINUM FWD/DIR PISTON (.690") W/ CHECKBALL

THIS IS A DIRECT REPLACEMENT FOR THE POPULAR CAST ALUM PISTON USED FOR 5 CLUTCHES IN OEM DIR DRUM

The Coan Racing COA‑22829A Billet Aluminum Forward/Direct Piston (0.690") with Checkball is a precision-designed replacement for the standard cast aluminum piston used in five-clutch OEM direct drums. Machined from billet aluminum in the USA, this 0.690-inch piston delivers enhanced rigidity and consistent sealing performance, while the integrated checkball ensures reliable hydraulic control under pressure.

Engineered for seamless drop-in installation, the COA‑22829A maintains proper fluid dynamics and engagement timing native to stock setups, but with increased strength and durability for demanding drag race, bracket, or aggressive street-use environments. It is ideal for builders upgrading front-end reliability and performance without altering stock drum configurations.