Yamaha 2003-2004 YZ450F/WR450F
  • Machined from 2618 T6 high tensile forged aluminum
  • Dome/Dish features smooth flowing radii and require no deburring or preparation
  • JE designs are specifically engineered for extreme applications including professional competition
  • Pins, pin fitment, lock and rings included
    • Piston Kit Disp Bore Size Over Size Comp Ratio Gram Wt Skirt Style Ring Pin Lock Gasket Sleeve
    247944 449cc 95mm STD 12.5:1 296 FSR XS9500 708-2050-16-93C 08-050-MW
    209289 449cc 95mm STD 13.5:1 302 FSR XS9500 708-2050-16-93C 708-050-MW JC7947
    209290 468cc 97mm +2mm 13.0:1 285 FSR XS9700 708-2050-16-93C 708-050-MW JC7934
    222087 478cc 98mm +3mm 12.5:1 293 FSR XS9800 708-2050-16-93C 708-050-MW JC7787