Enduro Bib Mousses are used by all serious enduro riders. They remove the need for carrying puncture repair tools when trail riding. Also used by Enduro racers during competition to prevent punctures. Equivalent to around 13 PSI in normal tubed tyres. Keep the Mousse lubed correctly and they last very well. Race retirements are costly, if you are serious about Enduro or Hare & Hounds XC racing these are a must have. Fitment all 21" front and 125cc to 450cc rear 18" & 19".