This seat was originally made for a Honda CB500, but it’s really universal, and fits the Yamaha XS650 like a glove. Read more at the CafeRace Parts Store:
Total length = 25″
Seat Pan Width (Front) = 7.5″ At narrowest point to 11″ at the bumstop.
Seat pan section to bumstop – 11.0 to 11.5″
Seat Pan Cowl/Bumstop section (no upholstery) = 14″