I'm using them and they're great. Noticeable difference on long climbs. Nearly 80 or 90 gram weight savings on each wheel. No problems with quality or air loss. Wish they manufactured some with 40mm valve stems though. There's no excuse for charging obscene prices for these little plastic doodads. I can see these totally replacing butyl and latex tubes eventually and wouldn't be surprised to discover they're less prone to flatting, but time will tell.
Last edited by Clem von Jones; 07-22-22 at 05:55 PM.