101 octaancilinderkit 125cc gy27395125cc Cylinder kit for all 125cc 4 stroke Chinese scooters which use the GY6 152QMI engines, An ideal low cost replacement kit for those worn or damaged top ends, Kit is supplied with required top end gaskets, barrel, piston, rings, pin and clips, If purchasing this kit for the Sym 125cc scooters, please Ensure your engine is the gy6 version (cylinder head stud holes hebben een afstand van 63 mm gat tot gat, buitenmeting), specificatie: zuigerpen: 15