Motorcycle Bore Size 77mm Air Cylinder Block For Yamaha WR250F YZ250F 2001-2013 WR250 YZ250 WR YZ 250 F 5XC-11311-20-00 Motorcycle Bore Size 77mm Air Cylinder Block For Yamaha WR250F YZ250F 2001-2013 WR250 YZ250 WR YZ 250 F 5XC-11311-20-00. Sale price : $273.80 Category : Motorcycle Equipments & Parts