Harley Davidson Original OEM Primary Belt.Part # 40009-80.Fits FXB Sturgis Models 1980-81.This is a 78 Tooth Belt and is about 1 1/8" Wide.It is used of coarse and I was told it was removed at low miles.The belt looks good to me for how old it is.It could use a good cleaning before installation,(my opinion).I bought this belt and a few other FXB parts from a customer who told me the belt was an original.I did not have another original to compare it too but checked the size and tooth count and it came up correct,(just being honest).I do not see any major wear and I believe it would last for quite a while depending of coarse how you ride.Most people don`t beat up their Sturgis Models.They are one of Harley`s Elegant Models.So if you been looking for a good used primary belt for your FXB,here you go.As always,Please look at all pics and read description so you know condition,(see all pics and read).Good luck bidding.Thanks for looking.