Challenge Almanzo Gravel Open Tubular Tyre

. This highly effective gravel tyre features a tubular construction and double layered puncture protection for excellent durability. The open design of the tyre performs like a tubular, yet conveniently mounts like a standard clincher tyre. Plus, its tight tread offers excellent grip at high speeds, making it a reliable racing tyre even on tougher surfaces Features Puncture protection strip x2 PPS2 Open tubular construction handmade Use Gravel TPI 260 PSI 60 130 Bead Aramid Carcass Super Poly Weight 355gBuyChallenge Wheels & Tyresfrom Chain Reaction Cycles, the Worlds Largest Online Bike Store.