Hoca Performance Exhaust for Scooters with the 50cc 2-stroke Minarelli 40QMB, E40QMB, 1E40QMB or 1PE40QMB engine. Nickel finish with carbon fiber silencer.These engines are commonly found on many popular 2-stroke full-size scooters. From brands such as Yamaha, Malaguti, Yamati, United Motors X-Speed, Aprilla, CPI, Benelli, Vento, Eton, Adly, Geely and many more.