The 700D has a 39T rear sprocket and the 700A has a 43T sprocket. Has anyone with the 700A considered installing the 39T sprocket. You would have to remove a couple of links. I haven't had the trany sprocket cover off so I don't know if it would accept a sprocket with an extra tooth. You would lower your r's and improve gas milege. The engine has plenty of power and torque to handle the swap. The roller chain sprocket setup is tough and easy to work with,not to mention, its economic. For my riding around here in central Ky. the factory combo works real well on my 700A. Just thought maybe some of the speedsters might be interested.