BzzzKill Harmonic Dampers By Mathews

Information from: http://bontrager.com/model/04579.

Using harmonic damper technology borrowed from the bow industry, BzzzKill inserts are a simple and effective way to cancel high frequency road vibrations. Plugs are easy to install and fit directly into the end of the handlebar. Aluminum insert. Sold as a pair.

Features

Plugs fit directly into the end of the handlebar (Do not tuck excess tape into handlebar end)

Begin tape on outside of bar and finish near the stem clamp

Brass version is 50 grams heavier than aluminum version and provides even greater vibration control

Easily installs on most road handlebars

Utilizes Mathews' harmonic damper technology to cancel high frequency vibrations