In my VAST experience (yeah right), people have told me that if you have a smaller bike like a 250 and below, you really dont need it, unless you are bounding doubles regularly. On larger bikes, like my XR600R, they actually do help, as the front end (and the rest of the bike) is very heavy. I am getting a KTM 950S, and they say even if you THINK about taking it on a rough road, to put on a dampner. Head shock is bad on big bikes. Plus, on DS bikes, after long rides they absorb a lot of vibration and impact and help keep your hands and wrists in better shape. I am getting one for my 600, just a matter of getting the time and $$$. just my $.02