cylinder kit Polini cast iron sport 70cc for LEM, MBK, Yamaha 166.0054

70cc cast iron sport cylinder kit from Polini for LEM 50 Flash, Ghibli, Tornado SS1; MBK-Sorriso 50, Target 50; Yamaha-CRZ 50, CT50. The cylinder has a 47mm bore and achieves an output of 9bhp at 10,500RPM according to manufacturer´s claims.