So i got my first suzuki bike few days back, and so far i love it. It is 2005 bandit 650n with 23k miles on it. There is one thing im worried of, the engine keeps sort of rattling noise when im driving around 5k revs and also when engine braking around 3-5k rpm. It is not brutally loud, but with my visor open i can easily hear it. Any ideas what causes this, or is this just casual suzuki sound. I have heard that these air/oil cooled engines can make a lot of noise, but im just curous..... The bike is going to have the valves checked out in 2 weeks, even though it only has around 5k miles since last check 2,5 years ago.

 

It is probably just the valve train making noise take your sockets and go around and snug any nuts you see and does it have rocker covers the will vibrate as well they all make noise