I have a full big gun system on my 400EX, and it appears that the gasket that is used to seal the connection between the header and silencer has disappeared. Now I've got a pretty serious exhaust leak and rattling sound. Anyone know where to get a replacement or what material to use to make your own?

Thanks in advance for any help.

 

I've used heavy duty heater hose before and a couple screw clamps. Or is there any industrila supply place around you can pick up a piece of siliocone tubing and use.

 

Whatever it is, it's got to be pretty thin. The gap is pretty small, but the clamp alone just doesn't close it.