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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Direct OEM replacement: 5H0-12119-00-00 / 4G0-12119-00-00
4051DA 4902M10200
excessive oil consumption
this stock-bore rebuild package is engineered for riders who demand OEM-level fitment with proven performance components
Honda 400EX XR400R Cylinder Head Assembly Top End Rebuild Kit Valves Rocker Arms FZ6 Direct OEM replacement: 5H0-12119-00-00 /Complete Top End Rebuild Kit with New Assembled Cylinder Head NEW after market 85mm, stock bore cylinder Wiseco or Wossner forged piston** Nitrite coated piston rings Chrome wristpin Circlips Assembled cylinder head with valves, valve springs, rocker arms (NO CAM) Talon Titanium head stud kit Top end gasket kit HD cam chain conversion NGK Spark Plug 1 year warranty* Compatible with all Honda 400X, XR400R, and 400EX models and years Runs on pump or