Polini B piston for the 154ccm aluminium cylinder kit from Polini for Aprilia AF1 Futura, AF1 Replica, AF1 Sintesi, Europa, Pegaso, Red Rose, RS, RS Extrema, RX R, Sport, SX, Tuareg Rally, Tuareg Wind and HM-Moto CRE, Derapage scooters as well as various karts with125cc Rotax engines type 122 and 123.