Balancing aerodynamics, weight, and affordability, the new ULTEGRA R8170 C50 wheelset is sure to inspire action on your group ride with its all-new tubeless carbon rim and updated, 12 and 11-speed compatible hub. Summiting climbs, carving descents, or cruising the flats, the new C50 is the jack of all trades among the new ULTEGRA R8170 wheel lineup. The tubeless, carbon rim features a 21mm internal width that pairs nicely with wider, modern tires while the Hyperglide cassette body is compatible with 11 and 12-speed cassettes. The C50 wheels feature a deep, 50mm dish combined with Shimano's all-new D2 rim design to offer increased stability at all yaw angles. While simultaneously reducing drag - you can expect an average saving of 5W over comparative carbon wheel models. The E-Thru Axle reduces weight and optimises rigidity for increased stiffness resulting in sharp cornering and smooth rolling at all speeds. The C50 comes tubeless ready, meaning you can get set and go. With tubeless, you can ride further and runner lower pressure for increased comfort. While also resulting in improved rolling resistance.