Sticky as requested; info cut from post, but not verified:
WR Bearings:
Fronts: 40x12x17 (seals 40x7x 22 or 23?). Bearings called 6203-2RD same on both sides (30-4004 seals).
Rears: 50x14x22 and 44x12x22 (seals: 50x30x7 and 30x44x5).
Bearings called 60/22-2RD-OE6 and62/22-2RD-QE6 (30-5003 and 30-4403 seals)
SKF:
Rear1 SKF 62/222RS1 Sealed Deep Groove Ball Bearing 22x50x14mm
Rear2 60/222RS Budget Rubber Sealed Deep Groove Ball Bearing 22x44x12mm
Yamaha nos:
Fronts: 93306-20348-00 and 93106-23002-00 (seal)
Rears: 93306-27206-00 and 93306-07202-00 (bearings)
93106-30001-00 and 93106-30045-00 (seals)
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