Cylinder Works Standard Bore Cylinder Kit - 77.00mm Bore, 14.7:1 High Compression Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise Nickel Silicon Carbide plated for long life Kits come complete with gaskets, cylinder, piston, rings, pin and clips