2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 200Get this manual
CYLINDER HEADVALVE TOOLS Driver 07749-0010000 Attachment, 32 35 mm 07746-0010100 Pilot, 20 mm 07746-0040500
Valve guide driver, 5.5 mm 07742-0010100
Valve guide reamer, 5.5 mm 07984-2000001
Valve spring compressor 07757-0010000
or 07984-200000D (U.S.Aonly) Spring compressor attachment 07959-KM30101 Valve seat cutter, 35 mm (45 IN) 07780-0010400 Valve seat cutter, 33 mm (45 EX) 07780-0010800