Big Bore Kit

Item Diameter > 87mm

  • Trx 400ex Trx400ex 400x 87mm 87 416cc Big Bore Cylinder 111 Top End Rebuild Kit
  • Honda 400ex 400x 87mm Big Bore Kit Valves Springs Stage 2 Hotcam +2 416c Top End
  • 400ex 400x 89mm Hi Comp Big Bore Kit Race Gas 12.51 Piston +4 Rebuild 440cc Kit