2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 307Get this manual
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CRANKCASETRANSMISSIONCRANKSHAFTBALANCER ('04'05) ASSEMBLY MAINSHAFT M5 BUSHING M1 GEAR (14T)
THRUST WASHER C5 GEAR (26T) SPLINE WASHER SNAP RING C3 GEAR (24T)
THRUST WASHER