2010-2011 Yamaha RS Vector / RS Venture Service Manual, Page 94Get this manual
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CLUTCH Roller
15.6 (0.614)
RST90GTZ
(14.6 mm [0.57 in]) GroovedGrooved
8FG-17624-30
16.0 (0.630)
(14.6 mm [0.57 in]) Machined