Made from billet alum. pulley is 4.50" O.D. where the belt rides, 3.625" down in the groove, 4.00" tall from mounting surface to out where V-pulley rides and 1.00" thick where pulley mounts so longer bottom pulley bolts will be needed.
Pulley has a female 2.00" register to mount off your crank hub and uses the six 3/8" mounting holes on a 2.782" bolt circle.
Great for marine, street or top dragster applications.