Changing to 15T

[Doorag]

and I'm going to have to buy a socket to get the nut off. What size is the nut on an '07 bike? I have see 30mm and 32mm mentioned on the forum and was looking for a definitive answer before I go buy the wrong socket.

 

[TownsendsFJR1300]

If you have access to a caliber measuring tool, pop off the cover and verify the size. An adjustable wrench snugged up to the nut, then measured with a metric ruler will also work.

A search found this thread, for an 08, its 30mm.

http://www.600riders.com/forum/how-tos/28646-how-change-your-front-sprocket.html