Brand new V3 1x CX guide.CarbonBand onNew Co-mold rubber upper guide for truly silent runningAvailable in 31.8 or 34.9mmBlack You may just be the type of rider that should be using some sort of chain guide. Some people, especially those who are pushing hard and going fast over rough terrain, are just always going to need some sort of chain guide. - Mike Levy, Pinkbike 2015.