I just purchased a set from ODS DAN and installed them in my 04 f6 std. They are made by grip and rip who advertises on this site. Easy to install,must remove skid frame and drill 6- 1/4" holes.They work jut like the factory installed units that came on the zr style sleds.I only rode my sled a short distance after installing just to get dialed in but I was able to get sled to stear much better even in crappy conditions.I FEEL ITS A WORTH WHILE INVESTMENT. I was never really able to get firecat to steer the way i wanted like old zr sleds but it seems much better already.Now it is more adjustable to changing trail conditions. Hope this helps you.