Designed to maximise race performance through advanced aerodynamics, our time trial wheels are built to guarantee superior efficiency and speed. Kleos RD Crono wheels are designed to support you in challenges against the clock, where every second makes a difference. The path to excellence begins with extensive studies in the wind tunnel, refining every detail of the aerodynamic profile. These wheels are designed to reduce drag, improve stability and increase speed and optimise every effort.An innovative project developed with the aim of creating a tubeless ready lenticular wheel with high performance and low weight. The focus on performance started with an aerodynamic study of the profile in the wind tunnel and resulted in a hollowtech modular structure with a spoked wheel core composed of different fibre textures to maximise resistance and speed and weighing only 990 g.The RRT hub is made of CNC-machined ErgAL 7075 - T6 mounted with CeramicSpeed bearings for greater smoothness and equipped with an adjustment ring. The AL 7075 - T6 freewheel body with titanium components is available for compatibility with all Shimano® HG, Campagnolo® (Classic and N3W) and SRAM® XDR drivetrain systems.Specifications:- Hubs: AL 7075 T6- Weight (g): 990 XDR (+/- 3%) (Tubeless Ready +20)- O.L.D. (mm): 142- Bearings: CeramicSpeed® 2RS- Transmission: RES 30 Rapid Engagement System- Compatibility: Campagnolo® - Shimano® - XDR- Max load, Bike + User (Kg): 109 Kg- Braking system: Disc Center Lock- Included accessories, Wheels bag / Instruction manual / Cassette lock ring (for 12T) / Brake rotor RD lock ring- Rim material: 18K Carbon fibre- Freewheel body: AL 7075 T6 - Titanium- Rim dimension: 622X21- Tyre dimensions: 25mm ÷ 35mm- Tyre type: Tubeless- Rear axle (mm): 12