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

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
big bore top-end gasket kit
big bore head gasket
Talon TITANIUM cylinder head stud kit
spark plug
No case or head mods required
Runs on pump or race gas