Vibration noise

[legroscalis]

I just start earring a noise when giving the scooter gaz at a speed higher than 35kph. When going over 50kph I can ear it more. I just installed a BBK I changed my main jet for a bigger one and everything is looking good the scooter run no problem (I’m using it everyday). I don’t know what the problem

[Zino]

Welcome to the forum
What kind of sound a clanking ,clattering ,buzzing ,knocking ?
Where does it sound like it is coming from in Front of you behind you below you ?

It could be just that you are running a bigger cylinder that pulls more air through it .

What scooter did you upgrade and what kit ?