Sounds like clutch to me. Did the bike just recently start making this noise ?
On another note, have you had the timing chain tensioner upgrade done?
im not sure when it started being noisy and i have not done the tensioner upgrade yet. i am almost sure the noise is clutch related as it stops rattling when i pull the lever. if it is a problem with the clutch, what do you think it might be as its almost a brand new bike. could it be a loose bolt in the clutch. thanks Dons. Russell