Clutch Drum, 78 mm ID, 82.55mm OD with 9/16-18 right hand threads.
This is a one piece clutch drum hogged out of solid steel with a 9/16-18 standard right hand threads turned on a CNC Lathe.
This is the very Best quality and made in the USA.
This drum has a extra large 9/16-18 right hand thread to handle more power.
1.18" Tall, inside wall is .880". The threads are .430" deep.
It has two holes to install and remove without having to grip the outside of the drum.
Used in some of the 16.07 to 1, and 4.28 to 1 gearboxes and others.
Zinc Plated.