Pro Bike Gallery: Danny Summerhill’s Felt F1X The cyclocross rider has a full SRAM-Zipp setup on his rig Published Nov 26, 2013 Logan VonBokel Share Share to Outside Feed Create a new post with the article attached Copy link Email Share on X Share on Facebook Share on Reddit Photo: unknown Photo: unknown Chain watchers are a good investment, as they prevent chains from falling off the chainrings while shifting. Photo: Logan VonBokel | VeloNews.com