2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 307Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER ('04'05) ASSEMBLY MAINSHAFT M5 BUSHING M1 GEAR (14T)
MAINSHAFT
M4 BUSHING M2GEAR(16T)
THRUST WASHERS COUNTERSHAFT C1 GEAR (29T) THRUST WASHER