"Super Drum" Reinforced Input Drum Assembly w/ Overrun Piston - 700R4 / 4L60E Except LS1 Engine

SUPER DRUM REINFORCED INPUT DRUM ASSEMBLY W/ OVERRUN PISTON FITS 700-R4/4L60E EXCEPT LS1 ENGINE

This Coan Racing “Super Drum” input drum assembly is specifically engineered for 700‑R4 and 4L60E transmissions (excluding LS1 applications), combining reinforced strength with precise hydraulic control. Built from rugged, race-ready materials, the drum is structurally fortified to withstand the extreme loads of high-performance driving. It comes complete with an integrated overrun piston that supports smooth and reliable clutch operation during deceleration and shift transitions. Designed to address the common shortcomings of stock input drums, the COA‑92885 ensures improved durability, alignment, and consistency under track-day or towing stresses. Assembled with Coan Racing’s exacting standards in the USA, this unit is ideal for transmission builds where reliability, strength, and refined engagement are critical.