1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 273Get this manual
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FRONT DRIVING MECHANISM (TRX300FW) NOTE The boots are marked "BJ68L" for the outboard joint and "BJ68" for the inboard joint(1) OUTBOARD BOOT
Install the bearing race in the bearing cage