We offer replacement primary clutch sheaves for the classic Yamaha Sno-scoot 80. The original Yamaha primary fixed clutch sheave, part number 32N-17611-00-00, has been discontinued, so we hunted down an alternate Yamaha part that gets machined to fit properly and work just like the original. This part fits all 1988-1990 Yamaha Sno-scoot 80 models.