What Our Gearhead(R) Experts Are Saying: "These wheels are the definition of balance-fast enough for race day but light enough for long climbs. The 45mm profile hits that aerodynamic sweet spot, and the Infinity hubs make power transfer feel instant. They're the kind of wheels that make every ride feel just a little more electric."Built for speed, stability, and responsiveness across all kinds of road rides, the Mavic Cosmic SL 45 Disc 23mm Wheels bring aerodynamic performance to everyday endurance. Their 45mm deep carbon rims were refined in the wind tunnel to minimize drag without sacrificing predictable handling in gusty conditions, while the 23mm internal width perfectly pairs with modern road tires for improved comfort and rolling efficiency. Mavic's Infinity hub platform maximizes responsiveness, ensuring every watt we put down transfers directly to the road. Lightweight construction and precision spoke lacing make these wheels equally at home in race settings, fast training rides, or long-distance adventures. Whether we're charging through a headwind or sprinting out of a climb, the Cosmic SL 45 Disc delivers a perfect blend of stiffness, aerodynamics, and durability for true all-round road performance.