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SMART HJC 21B is the second-generation standard Bluetooth communication system model that supports HJC helmets compatible with 21B
- Display touch a colori
To keep wheels light and easy to maintain
TIRES Maxxis Highroad
Shell made of Nylon and Carbon composite
Ruota Posteriore Bontrager Aeolus 5 Disc D3 Tubular Bodice:Shimano SMART HJC 21B is theThe fastest wheels in the world have become even faster The same wheels ridden by Fabian Cancellara and Team Trek Segafredo athletes: the lightweight Aeolus 5 D3 Tubular Disc deliver the benefits of exceptional aerodynamics. Interchangeable axles complete the D3 rim profile aerodynamics, offering adaptability, speed, and performance. Product details The Dual Directional Design D3 profile offers less aerodynamic drag at the tire contact point and rim
