Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersThree options to choose from: Standard Bore, Standard Bore Hi-Compression and Big BoreMatched with Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long lifeNo need to check piston-to-cylinder clearance, just installKits come complete with gaskets, cylinder, piston, rings, pin and clipsBig bore cylinders do not require machine work (unless noted)