Mavic 2011 Ksyrium SL Road Bike - Clincher Wheelset Responsive Less inertia: ISM Optimized energy transfer: Isopulse lacing and asymetrical rim Lighter Light and stiff rims: ISM Extra-light components: FTS-L free-wheel, Zicral spokes, carbon fr Rely on the proven Mavic quality Rim resistance: Maxtal, SUP Fore drilling High quality adjustable c Weight: 1485 grams front wheel: 645 grams rear wheel M10: 855 grams rear wheel ED11: 840 grams