700c, 27-Inch & 650c

The all-rounder of the new DURA-ACE wheel lineup, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding. The perfect blend of low weight and aerodynamic performance, the all-new DURA-ACE C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. - 50 mm height full carbon rim - Internal rim width: 21 mm - DIRECT ENGAGEMENT - Compatible only with Shimano road 12-speed cassette sprockets

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 21 mm internal width that pairs nicely with wider, modern tires while the HYPERGLIDE cassette body is compatible with 11 and 12-speed cassettes. - 50 mm height full carbon rim - Internal rim width: 21 mm - Shared rim profile with R9200 DURA-ACE wheels - Improved aerodynamics