2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 89Get this manual
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GEAR SELECTION 8 Weight rivets
90386-09001 8FG-17624-10 15.0 (0.59) VESPEL TP-8549
(14.6 mm) Grooved
RST90 "USA Canada"
90386-09001 8FG-17624-20 15.