Skip to content
Due to Thanksgiving and the holiday rush, our current handling time is approximately 4–5 business days. We sincerely appreciate your patience and understanding. We truly appreciate your business and are thankful for another great year serving our customers. If you have any questions or concerns, please contact us—our team is working as hard as possible to ship all orders promptly.
Due to Thanksgiving and the holiday rush, our current handling time is approximately 4–5 business days. We sincerely appreciate your patience and understanding. We truly appreciate your business and are thankful for another great year serving our customers. If you have any questions or concerns, please contact us—our team is working as hard as possible to ship all orders promptly.

400EX 400X 87mm Big Bore Kit +2 Cylinder Piston 416cc Top End Rebuild Parts Kit

by BPRATV
Save 20% Save 20%
Original price $486.10
Original price $486.10 - Original price $486.10
Original price $486.10
Current price $388.88
$388.88 - $388.88
Current price $388.88
  • Works on all Honda 400EX, 400X, and XR400R models and years
  • 87mm heavy-duty big bore cylinder
  • 87mm big bore Wiseco or Wossner forged piston
  • Nitrite-coated piston rings
  • Chrome wrist pin
  • Circlips
  • Cometic big bore top-end gasket kit
  • MLS big bore head gasket
  • Talon TITANIUM cylinder head stud kit - LIFETIME WARRANTY*
  • NGK spark plug
  • No case or head mods required
  • Runs on pump or race gas
  • 1-year warranty on the complete kit, used and new parts*

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare