We offer genuine Yamaha track drive shaft bearings for the classic Yamaha Sno-scoot. This is the bearing that goes on the right side of the frame, just to the left of the brake rotor, which supports the right side of the track drive shaft. The Yamaha part number for this bearing is 93306-00444-00, which replaces part number 93306-00441-00, and it is a stock replacement part for all 1988-1990 Yamaha Sno-scoot 80 models.