I have seen them on heaps of the bikes on Ebay but have no clue what they actually do.

Or if you ride an 06/07/08 10 they tame a fair amount of the inherant head shake under hard accel..[farkin savage without damper].kawasaki250 wrote:it attaches to your steering column, or front fork to your frame on older bikes.
it has oil and a piston and you can adjust the rate of which oil flows around the piston which gives you a softer or harder steering so in turn you can get better handling at higher speeds to your liking,,,, basically reduces the impact of hitting a pot hole mid corner at the handle bars.
the newer bikes have a speed controlled dampner fitted, that makes it harder to turn the steering the faster you go, where at stand still its as easy of if its not there![]()
hope this helps mate
cheers Tim