Injecting foam into clip-ons?

[RandyFloyd]

I don't think this is going to give you the effect your hoping for. I've used the Dynamat stuff for years when I was doing high end custom car audio and it works great on a thin piece of metal like the inside skin of a door but I'm not so sure about using it for this application.

Let us know how this works out.

I would go the lead route myself. Yeah it's going to add a little weight but you'll never notice it.

This got rid of most of the vibration...at idle, I can't feel a thing.  At full throttle the vibration still comes through.  Will get the progrip gel grips to help even more.