Shimano WH-R9270-C50-TL Dura-Ace Wheelset The top tier all-rounder With the new 12-speed Dura-Ace groupset comes an all new lineup of Dura-Ace level wheels in the form of the R9270 lineup. In the middle of the lineup you'll find the C50's. The C50's are Shimano's top of the line all-rounder wheelset designed to balance weight and aerodynamics. It's both lighter than the previous generation C40 as well as nearly aerodynamic as the previous C60. The full carbon fiber rim design uses D2 technology to boost the lateral stiffness and vertical compliance for a faster and more comfortable ride. The 21mm internal rim width paired with tubeless compatibility supports wider tires at lower pressures for better grip and rolling resistance. Located at the heart of the hubs are Dura-Ace's lightweight hubs with smooth sealed bearings. With the whole 50mm deep wheelset weighing in at 1461g, Shimano's top tier Dura-Ace C50's will turn your bike into a rocketship on both the climbs and the flats. Features50mm deep rims are the ideal balance of weight and aerodynamics Carbon fiber rims are incredibly light, laterally stiff, and vertically compliant1461g wheelset weight helps turn your bike into a rocketship Tubeless 21mm wide internal rim lets you run wider tires at lower pressures for better grip and rolling resistance Lightweight Dura-Ace hubs with smooth sealed bearings SPECIFICATIONSWheel Size700c Material Carbon fiber Outer Width28mm Inner Width21mm Rim Height50mm Spoke Drilling24h Valve Type Presta Tubeless Yes Tire Type Clincher Brake Compatibility Disc (Centerlock)Engagement Degree Engagement Upgrade Available No Front Axle12x100mm Rear Axle12x142mm Intended Use Road Approximate Weight674g (Front), 787g (Rear) | Shimano | Wh-R9270-C50-Tl Dura-Ace Wheelset Wheelset, 24H, Centerlock, 12 Speed Road Only