Dura-Ace C50 WH-R9370-C50-TL

The Shimano Dura-Ace WH-R9370-C50-TL carbon road wheelset is developed for riders looking for a versatile balance of aerodynamics, low weight and stiffness. With a 50 mm rim depth, redesigned rim and hub construction, and carbon spokes, the C50 is built to respond accurately to changes in pace while maintaining efficiency at racing speeds. Testing with world-class riders informed the development process, helping Shimano refine a combination of characteristics for climbing, accelerating, sprinting and high-speed cornering.

Shimano quotes a total wheelset weight of 1,302 g, comprising 593 g for the front wheel and 709 g for the rear. That is 159 g less than the previous WH-R9270-C50 model. The reduction comes from a significantly revised rim and hub structure, together with carbon spokes. The design seeks to preserve the stiffness needed at professional racing speeds, delivering stable handling and an immediate feeling of control when effort and speed increase.

Aerodynamic performance is another central part of the C50 concept. Shimano reports using more than 5.4 million shape simulations to refine the rim profile, achieving a claimed 6% aerodynamic improvement over the previous generation. The 50 mm rim depth is designed to help riders maintain speed in varied conditions, making this a versatile option rather than a wheelset focused on only one type of course.

The 23 mm internal rim width was developed with 28-30C tires in mind. A hooked tubeless rim design also provides broad tire compatibility. Both wheels use 21 carbon spokes, with mixed spoke diameters chosen to balance system weight and stiffness. Shimano cup-and-cone hub bearings allow precise adjustment and servicing, while the rear Direct Engagement system is designed for efficient power transfer under load. Together, these details make the Dura-Ace C50 a performance-oriented wheelset for riders who value a responsive ride, aerodynamic efficiency and confident handling across changing terrain.