The all new Blacklabel 309/289 XC wheelset is designed to push the limits of aggressive XC racing and riding for ultimate performance. Featuring a new low profile and wide channel rim that increases cornering speed, direct power transfer, and improved compliance. The Reynolds proprietary hubs are fully CNC machined with Industry Nine Hydra internals resulting in instant 0.52° engagement for immediate power delivery. Our IDM (Impact Dispersing Matrix) rim construction delivers industry leading impact resistance and durability with a lifetime warranty.