In case anyone is interested I wrote down the manufacturer and bearing number for each bearing when I replaced the rear suspension bearings. I don't know if somebody like Bearings, Inc. would be cheaper than Yamaha or not. If you have to replace the bushings they're Yamaha only parts.
Yamaha 93399-99919 is the spherical bearing that goes inside the bottom of the shock. Apparently it is special made because there is no numbers stamped on it. As a warning, the nuts Yamaha supplies now on the bolts through the connecting rods (steel dog bones between the swingarm and the relay arm) don't work. If you use the washer under the nut the thread locker on the nut does not ingage the threads. If you leave the washer out you run out of threads before it gets tight. I ended up grinding the back off the nuts - they're almost twice as long as the stock ones. both the bolt and the nuts were new. The shop maunal says 53 ft-lbs for these nuts but I stripped one of the stock ones. I quit at 40 ft-lbs this time. RELAY ARM Quantity Yamaha Pt. # Mfg Mfg Part # description 2 93317-41761 KOYO BHKM1730JU NEEDLE BEARING 1 93317-42060 KOYO BKM2035JUU NEEDLE BEARING 1 93399-99919 - - spherical BEARING 2 93101-16131 KCR MHS 16.5 26 5.5J SEALS Swing Arm 2 93317-41761 KOYO BHKM1730JU NEEDLE BEARING 2 93317-52865 NTN 7E-HMK 2830 NEEDLE BEARING Bill
