Exhaust Hanger Block Off Plug will fit: 
99-23 Hayabusa 

MADE IN THE USA!

This Plug is made from High Quality Aluminum then anodized and contrast cut. This plug is what you need to set off your bike when you have gone from a 2 into 1 or buy 2 if you have removed both cans! (Item shown on bike is for representation of the fitment.)