74 Knucklehead Cylinder Piston Kit - V-Twin 11-2601

Replacement 74 inch Knucklehead cylinder and piston kit are honed and pre fitted with 8.5:1 compression cast pistons and rings. Set does not feature any factory markings.

They are ready to run and will require break-in. Please refer to proper shop manual for suggestions on break-in. For stock stroke only. For 1941-1947 Knuckleheads. Cylinders are without lip on top. Order head base gasket separately. *NOTE: All cast iron cylinders have same piston to wall clearance.0025 -.003. Bore size is 3.4380 inch-3.4385 inch inner diameter. *NOTE: Replacement type cylinder kits do not have original motorcast markings on the cylinder base.

Notes:

• Shovelhead rocker arm shims may be used on the left side of the Knucklehead rocker arms to adjust end play. Available as (.005) (.007) (.015).

Fitment:

Installation instructions (PDF)