Can't remember if it was the front or rear disc that I tried to source,when it comes to stuff like this I'm well enough connected to avoid such things as retail!! But all the alarm bells started ringing when I realised a lot of the parts didn't cross reference like so many yamahas do,so I didn't even have the choice of buying secondhand or aftermarket hence why I bailed out.

Oh and mine was a SM with 17" rims