Artudatech Piston Kit & Rings Set Fit for Yamaha YW YQ YN 100 BWS Aerox 1999-2003 4VP-E1631-10 4VP-E1631-19 Motor Parts Artudatech Piston Kit & Rings Set Fit for Yamaha YW YQ YN 100 BWS Aerox 1999-2003 4VP-E1631-10 4VP-E1631-19 Motor Parts. Sale price : $16.35 Category : Motorcycle Equipments & Parts