cylinder head Naraku 160-180cc for GY6 125, 150cc

Tuning cylinder head with larger valves, larger ports and an enlarged 59mm combustion chamber. The cylinder head fits the NARAKU tuning cylinder sets [160-180cc] for Chinese GY6 125/150cc engines (scooters, quads and buggies) To increase performance even further, a modified sports camshaft with adjustable timing can be fitted. Please note: If purchasing this kit for the Sym 125cc scooters, please ensure your engine is the GY6 version (cylinder head stud holes have a distance of 63mm hole to hole, outside to outside measurement).