as an update to an old thread. Kevin and friends have been running the Nitro Mousses for some time now and seem to like them. It seems the mousse needs to wear in along with the tire. Last week was one of the slickest rides we have had all year. Leaf covered trail with 2-3" of rain the night before on top of frozen/thawing ground. I was running a trials tire with tube @ 10psi and they were running 505 and at81EX with very soft feeling bibs and they were doing great. I still love Tubliss but may have to try a set of Nitro Mousse's soon. I also see SRT makes a mousse but don't know anyone who has tried them.