Anyone hear this weird vibration like noise between 4-5k rpm? Happens in every gear without fail unless you pull through the rev range really fast. Have a full Termi system installed.
Has it gradually become noticeable or suddenly appeared? Between the engine clanking( used to ride inline 4) and the buffeting with wind noise, find it hard to hear anything.
I had some crash bungs installed, they were done by ducati so i thought they would have installed them correctly. Had a buzzing sound, like you said between 4 and 5k. Turned out that the crash bungs installed through the engine were loose. Tightened to 80nm and all sorted. As above try and see what's loose. I put the bike on the centre stand, reved the engine to 4/5k and moved around the bike until i found what was buzzing Good luck.