The Ksyrium has always represented the best in aluminum wheel technology. Following in the footsteps of the venerable Ksyrium Elite and Ksyrium Pro. the all-new Ksyrium SL takes it to the next level. It's the ideal all-around wheel for cyclists looking for reliable support for their everyday road performance. The new wheel is light (100g lighter than the previous Ksyrium Elite. despite a wider rim) and still as durable as ever thanks to our patented ISM 4D process. This machining process allows to remove all the excess material between each spoke hole while keeping a sufficient wall thickness where the spoke tension and the stresses are the strongest. These rims are manufactured in our aluminum rim factory at France. The tapered spokes further reduce weight and provide a more responsive wheel. Their patented elliptical shape also saves energy for better performance. Fore technology improves stiffness. The upper rim deck is not drilled, so the rim remains strong and rigid. And it doesn'...