while building my YFZ for this years GNCC series I decided to contact DeRisi racing for there millinium Revalve kit instead of going with Aftermarket shocks. After last weekends opener in TX, i feel very good about my decision!!!!! The shocks worked great. Even though I did not get ride in practice the fine tune the shocks they still worked great. Soaking up everyting I threw at them with little to NO rear end kick or swap! I noticed most of the top pro YFZ's with expensive aftermarket shocks where still kicking up bad on the rough terain. This was the first real test I have got on the shocks on a rough track where shocks realy made a difference. I would say they passed with flying colors. Santo if your on this site THANKS!!!!!!!!!