*UPDATE USE 11-1570

Replica 74" Knucklehead cylinder set with 5 fins and black finish features cast iron cast construction with original markings. Pre-fitted with cast 8.5:1 pistons and rings.
The rear cylinder has the original casting marks of MoCasCo, on the left side "2-86". Cylinder castings are replicated after the post production of the 74" Knucklehead, pre-1950. *NOTE: See additional photos. Photos show cylinders installed on a V-Twin MFG replica Knucklehead engine. *NOTE: Replica cylinder is the later version of the original replacement cylinder of the late 1940's. *NOTE: All cast iron cylinders have same piston to wall clearance .0025 -.003. Bore size is 3.4380"-3.4385" inner diameter.