The ultra-lightweight, durable Mavic Ksyrium SL Wheelset brings stability, stiffness, and control at high speeds to our weekend race series, high-speed training rides, and everything in between. This wheelset features an aluminum construction and uses Mavic's patented ISM4D technology, completely removing excess material between each spoke hole without sacrificing thickness at the highest tension area. With the use of Fore technology, stiffness is optimized, the need for rim tape is completely eliminated, and the upper bridge remains strong and rigid without being drilled.