The Black Inc TWENTY is our ultralight climbing wheel, crafted from a blend of ultra-high strength carbon fiber to give you the stiffness required to conquer any mountain climb and the control to descend with confidence. The TWENTY features a revised hub construction with low-friction CeramicSpeed bearings and an updated freehub body engagement system. Expect rapid acceleration and ultimate performance on the climbs. The clincher version with all-steel spokes weighs in at just 1,240g and features an updated rim bed geometry for tubeless.