Complete cylinder kit with all gaskets and parts for fittingThis 125cc Naraku cylinder delivers engine performance corresponding to the originalThus ideal as a top quality inexpensive replacement for a defective original cylinderThe piston features the Naraku wear-reducing coating, as found in most other Naraku kitsThe running-in period is significantly improvedIf 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