My XRAY XP10 ran super well at this high-speed, high-grip circuit. My car was fitted with a couple of "development" parts which are likely to be included in the next production version of the XP10 platform! Mainly, the longer rear extra stiff bump spring, as well as side shocks from the X12 platform, to replace the kit tubes. The side shocks worked better in the extremely demanding modified class, which had C=1.5 springs mounted. I was once again using a side spring to replace the kit front springs (longer spring for more suspension travel) as I mentioned in an earlier tech tip.