"Super Drum" Kit - 9 Clutch

The Coan Racing COA‑12827 “Super Drum” Kit (9-Clutch) is a high-performance internals package designed for GM Powerglide transmissions, expressly built for those wanting to upgrade to a nine-plate Super Drum setup. At its core, the kit includes a Maximum Duty super-alloy hub, engineered to endure elevated torque and heat loads, and a billet steel reaction flange featuring 12-point straight-cut splines for precise engagement.

As a complete assembly, this drum kit forms the robust foundation required for the Coan COA‑12207A nine-clutch direct friction pack (sold separately), ensuring proper fit and seamless hydraulic operation. With its race-focused construction and exacting attention to strength and alignment, the COA‑12827 delivers bolt-in performance and repeatable reliability in high-stress Powerglide applications.