Headers Noise???

[Skeldaw]

My 400ex is doing a kind of annoying vibration noise, I first tought it was the header/slip on connection but the bolts are tight, Then I tought it was the baffle but it's well in place, So I looked at my headers and I noticed that it vibrate when mid to high rpm, How i can fix that?

[CJM]

Tighten the connection at the head. Also make sure the heat shield is tight.

[atvrider13]

Does it have a heat shield on the header? When those are loose they are noisy. Or if you have a frame skidplate those can rattle also. I Use adhesive backed foam inbetween the skid and frame to rid the racket.

[Skeldaw]

I have no heat shield because it's a full white bros system

[426kidz]

your header nuts are loose

[pmg8134]

aren`t there copper crush washers in there too?