Honda 400EX 400X Port Ported Head Porting Assembly Assembled Kibblewhite Valves TRX450ER improved torque accuracy

improved torque accuracy

Crankshaft counter balancer plain bearings

Built for serious riders seeking a powerful yet reliable upgrade

and 3mm thick washers

Honda 400EX 400X Port Ported Head Porting Assembly Assembled Kibblewhite Valves TRX450ER improved torque accuracyFITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS NEW after market cylinder head and valve cover Full race port and polish Valve guides cut Complete head assembly Kibblewhite valve springs kit Kibblewhite Black Diamond intake and exhaust valves Kibblewhite viton valve stem seals Valve keepers Rocker arms Rocker arm shafts All other washers and hardware The head you receive will look just like the one in the photo All parts are brand new 1