Hoca 70cc 2-stroke Big Bore Kit 12mm Piston Pin, Part #169-153
Hoca 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 more. Includes cylinder head. Wrist Pin Length: 36.8mm. Wrist Pin Diameter: 12mm. Piston Diameter: 47mm. Displacement: 70cc.