DETERMING BAG SIZE TO ORDER:To determine what size saddlebags you should order, just write down the bags measurements (from details about bag above), and then compare the measurements to the bike. Occasionally, problem can crop up; like a bike with a rear light that comes up from the side of the seat where the bags attach or some other logistical problem with the fit. So just be careful and take evrything into consideration, and you should be fine. We recommend the little bags for bikes that have 750cc engines or smaller (lie 450's 600's etc), our medium size bags for bikes in the 750 to 1100 range, and our big bags are for big custom bikes, big Hondas, big Kawasaki's, big Harley Davidson bikes, and the like.