When I bought my Buell (xb12r), it had the 1125r mirrors on it. I could not see a thing. I picked it up in VA and rode it back to PA and couldn't see anything behind me. As a matter of fact, the cop that pulled me over was following me for 5 miles my wife told me. I would not recommend putting them on. When I got home, the first thing I did was go online and find better mirrors.
Just my 2 cents.