The XC racing tire for all conditions + mixed terrain No tire handles XC race courses like the Barzo XC Race, and it’s got multiple UCI World Championships to prove it. Its speed isn’t limited to any specific weather or surface. Rain and mud, sun and hardpack, roots and rocks – it doesn’t matter, the Barzo Race shreds it all. The alternating center knobs roll fast, and – despite the tire’s speed-focused pedigree – the moto-style shoulder knobs bite hard while cornering. Siping throughout increases grip under lateral loads, helping to maintain speed across terrain of all types, and spacious knob placement cleans muck and loamy soil. Graphene 4C Compound - Rubber, infused with Graphene in a graduated schedule of four compounds across the rolling strip and shoulders. Two stabilizing base compounds boost puncture resistance and create a foundation for climbing, braking, and cornering loads. The trail-side compounds reduce rolling resistance, boost traction, and get tacky on switchbacks and off-camber sections, wet or dry. XC-Race TLR 120-Tpi Casing - The lightest casing for XC racing, pairing a durable, supple 120-TPI nylon construction with tubeless-ready, World Champs-proven Aramid beads. The XC-Race TLR spins up fast, shrugs off punishment, and mutes chatter without muddying responsiveness – speed and trail feel without vulnerability.