47mm Big Bore Head Kit for 50cc 2-stroke 40QMB, E40QMB, 1E40QMB and 1PE40QMB Minarelli engines.
These engines are commonly found on many popular 2-stroke full-size scooters and ATVs such as Yamaha, Malaguti, Yamati, United Motors X-Speed, Aprilla, CPI, Benelli, Vento, Eton, Adly, Geely and many more. Includes cylinder head.
Wrist Pin Length: 36.8mm
Wrist Pin Diameter: 12mm
Piston Diameter: 47mm
Click either of the buttons below for free personal shopping assistance via live chat or telephone. We would love to speak with you in order to help you select the best toy or hobby.