Those Rubber Vibration dampers Actually Work

I recently ordered a new set of those little rubber plugs that go between the vertical fins at the top of the head above the spark plugs. I only had a couple left in my 750 twin. I popped out the last two and they were as hard as rocks.

I put four on each side because there are four gaps, even though the drawing only calls out three per side.

They actually do something. I had annoying harmonic vibration in the 3500 - 4000 range in high gear which seems to be gone. It now feels pretty much like when it was new. I assumed the gradual increase in vibration was wear in the engine or balancer, but maybe not. I guess those dampers just hardened over time and a couple fell out which made the felt vibration increase. So, good to know they are there for a reason.

Post a picture. Good heads-up.

Here's a picture

Interesting. So if I put 10-20 in the fins of my 650 maybe my mirrors would be usefull at freeway speeds? :woohoo:

Bluemeanie wrote:

Interesting. So if I put 10-20 in the fins of my 650 maybe my mirrors would be usefull at freeway speeds? :woohoo:

I thought the fours were supposed to be smoother than the twins....?

Yea, they are but mirrors are useless at 6000rpm on the freeway!

If there's nothing on the inside of your handle bars, you can fill them completely with caulking or any other rubberized sealer.

It literally KILLS the vibration and mirrors become usable anywhere/anytime.

Cheers!