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Aerodynamics favor the wheel and tire that best manage airflow as integrated unit. Mavic's CXR 60 Tubular WTS Wheelset is a perfect example. The CXR 60 features a mid section profile rim that is great for maximizing aero benefit in rolling or hilly races or courses. Any road racer or triathlete who wants to be competitive has to know how to exploit aerodynamic wheels. This integrated Wheel Tire System cheats the wind by using wind-tunnel research to match the profile of the rim and the tire to best direct air flow around the tire and to improve laminar flow off the surfaces at any yaw angle. Special grooves in the rim assist in this process, called the CX01 Blades system. Given that Mavic was engineering the tire and rim at the same time, the tire matches up flawlessly.

The 60mm rim itself was developed along NACA aero guidelines to minimize lateral wind resistance and maximize laminar propulsion. As with many other new aero wheels, the CXR 60 is wider at 27mm external. The 100% UD carbon fiber rims are exceptionally light, yet are laid-up for maximum results. Traditional spoke hole drilling is reinforced from the inside to keep the rim surface clean and slippery in the wind, yet plenty strong enough to carry the high tension loads required by the straight-pull steel spokes. The double-butted spokes are bladed, with 16 laced radially on the front wheel, and 20 laced 2x drive, radial non-drive on the rear. The steel spokes work with the rim to damp vibration and road chatter, while slicing through the air. The hubs feature Mavic's carbon center tube with aluminum flanges, which has been a very reliable, and light production technique. The oversized aluminum axle provides excellent stiffness and rides on some of the top steel cartridge bearings in the industry, the QRM+. With this hubset, the bearing pre-load is micro-adjustable. On the rear hub, the FTS-L aluminum freehub body keeps things light, with consistent positive engagement. ... Read More