03+ YZ250 YZ 250 Stock OEM Bore Cylinder Head Complete Top End Rebuild Parts Kit

804M06640, 5CU-11631-00-A0, 5CU-11311-02-00, BR8ES, C3592,C7855,8216DA,01.2321.B,01.2321.C

FITS ALL 2003 AND NEWER YAMAHA YZ250 TWO STROKE DIRT BIKES

Aftermarket 66.40mm cylinder

Aftermarket cylinder head

Wiseco or Wossner 66.40mm forged piston**

Piston rings

Wristpin

Circlips

Top end gasket kit

MAXLOCK head stud kit

Cylinder to case dowel pins

Everything is new in the original packaging and covered by warranty*