I see that on this forum are only questions but no answers...I have also this problem, i talked to my dealer and scheduled me for an inspection. He also said that might be the fuel pump but only the diagnosis will tell us for sure. I will come again with news details after the diagnosis.
All good!

Hi guys, I own a 900 ryker and I also heard the clunking mostly when I move on but what worries me most it's a buzzing that I hear for the last 50 km and it can be heard even when I am stopped or driving... it seems to come from somewhere in the right side of the ryker. I only drove 350km with my ry...

Hi guys, like you, I'm the owner of a brand new ryker 900 ace, I only drove 350 km on this new toy and I have to say that it's more fun than I expected. I salute you all!