Billet Head Kit for the Go-Ped GP460 and CY46 engine. The kit includes a machined cylinder, piston, ring, circlips, head shell, dome, .020" copper head gasket, base gasket, spark plug, and bolts. This will give a noticable increase in acceleration. Large finned head shell provides additional cooling. Stroker domes are also available for our +1mm stroker crankshaft. Select dome size from the drop down menu.