The only exhaust Im aware of thats listed for the r7 specifically is a Two Brothers and I hate Two Brother exhausts. Ive read the yosh and akropovic from the mt07 fit fine so I decided to go with the Graves for the mt07 and try it,. Had nothing to do with price or availability, I just like graves, Ive used it on several of my other race bikes, that being said,Its literally the exact same exhaust...I just found out today when I called and ordered the ecu flash from Graves. The MT-07 Graves exhaust is a perfect fit for the R7 according to Graves. I figured it would be. I received mine today but won't get a chance to install for a week or two. Ill keep you posted