72 tooth sprocket/drum assembly for 35 chain.
Drum has 3 different sets of mounting holes; 3 and 4 hole on a 3-3/4″ diameter bolt circle and a 4 hole pattern to mount on our AZ2561 mini-hub for use on a 1″ live axle.
Drum assembly is machined on the inside for the use of our 4-1/2″ brake assembly.
