Dumb question - good answer? [?]

Discussion in 'General Discussion / News / Information' started by Klaus, Sep 7, 2004.

  1. Klaus

    Klaus Ol'Timer

    I've always wondered what these black little rubber pucks are supposed to be good for on new air cooled engines? They sit between the fins, I'm sure everybody has seen them at some time, and sooner or later they disappear, fall out. What's their purpose, I wonder?
  2. Loading...

  3. BobS

    BobS Ol'Timer


    In the 1970's, I had a BMW bike in the US. BMW sold those little rubber pieces as an accessory to reduce engine vibration and noise. You installed them in between the fins on the cylinders.

  4. Klaus

    Klaus Ol'Timer

    Hi Bob, I thought about vibrations, but especially BMW would come up with a better idea? Usually those things disappear after a few thousand miles, and I haven't noticed a difference. Just sold a Kawasaki Boss 175 and the guy asked me what those rubber things were for, I didn't know what to say. Vibration and engine noise on a 175cc engine? There's got to be another explanation!

Share This Page