High quality Harley Davidson replacement engine motor cylinders for vintage motorcycles are available at Superior MC Supply. Fine cast iron cylinders are furnished in a “Finished” version, Bored to Standard, and painted black. If you are rebuilding a vintage Harley Big Twin (Panhead, Knucklehead, Shovelhead,W WL WLA WLC 45 FLATHEAD EL FL FLH FXE) or an IronHead XL Sportster, here is your opportunity to get a great set of engine cylinders for your antique Harley at a very fair price. We also sell STD or Standard pistons in our Superior Engine/motor section that you may mate up to these cylinders with rings, wrist pins, and locks for easy installation. When installing pistons in the cylinders it is suggested that you hone the cylinder prior to installation

Replacement Engine Motor Cylinders available at Superior MC Supply:

Single Cylinders

Single Cylinders

Single Cylinders


Replacement Single Cylinders for your Shovelhead, Panhead, Knucklehead or Sportster Harley engines. Get just the front or rear cylinder, or look to our Cylinder Sets Section to buy both at once. Replace your worn out cylinders, with high-quality Superior replacement parts. These cylinders are cast iron, standard bore, and the perfect fit for your vintage Harley Big Twin.

Cylinder Sleeves

Cylinder Sleeves

Cylinder Sleeves


Cylinder Sleeves are a great fix for common wear on the engine cylinders. Less expensive and time consuming than replating, and easy it replace as the old sleeve wears out. We have sleeves for Harley Sportsters, K models, Knuckleheads, and Panheads. The right sleeve will have your engine working like new so you can get back on the road.

Big Bore Kit

Big Bore Kit

Big Bore Kit


Looking to get more power out of your Harley Big Twin engine? We have big bore kits with the cylinders, pistons, and rings you need to increase your engine displacement. Get a single cylinder kit or save by ordering both cylinders in a kit.

Cylinder Sets

Cylinder Sets

Cylinder Sets


Replacement Cylinders Sets for your Flathead, Shovelhead, Panhead, Knucklehead or Sportster Harley engines. Replace your worn out cylinders, with high-quality Superior replacement parts. These cylinders are cast iron, standard bore, and the perfect fit for your vintage Harley Big Twin. The cylinder is the heart of your engine, so if yours aren’t in top shape get a replacement cylinder set today and bring your engine back to life.

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