Shimano Dura-Ace R9370 Carbon Clincher Disc Rear Wheel Elevate your time trial and triathlon setup with the Shimano Dura-Ace R9370 Carbon Clincher Disc Rear Wheel, the ultimate aerodynamic upgrade designed for maximum speed against the clock. Developed and rigorously validated alongside world-class professional triathletes and elite WorldTour riders, including Mathieu van der Poel and Kat Matthews, this full disc rear wheel delivers exceptional acceleration response and predictable handling under intense race conditions. Engineered as the perfect partner to the C99 front wheel, the WH-R9370-D-TL-R creates Shimano's fastest dedicated race configuration for solo road time trials and triathlons. Advanced Full Disc Aerodynamics Featuring a full carbon disc construction, this rear wheel is shaped by extensive aerodynamic simulations and wind-tunnel testing to completely eliminate drag at the rear of your bike. Weighing in at a competitive 987g, it achieves a remarkably light system weight without compromising structural rigidity. The result is instant, uncompromising power transfer with every pedal stroke, allowing you to build and sustain blistering momentum on high-speed courses. Pro-Proven Stability and Speed Beyond pure straight-line speed, the Dura-Ace R9370 Disc has been refined to offer outstanding stability during full-gas sprint efforts and predictable behavior in challenging crosswinds. The tubeless-ready hooked rim design allows you to run modern, low rolling resistance tyres for optimal grip and cornering confidence on technical courses. Built to deliver championship-level performance, this disc rear wheel gives you the decisive competitive edge required to crush your personal records.