Mavic 2011 Ksyrium Elite Road Bike - Silver Clincher Wheelset (Shimano) Responsive wheels Less inertia: ISM Optimized energy transfer: Isopulse lacing and asymetrical rim Lighter wheels are faster wheels A light rim with the same stiffness: ISM machining Rely on the proven Mavic quality Rim resistance: Maxtal, SUP welding, Fore drilling Weight: 1550 grams front wheel: 690 grams rear wheel M10: 875 grams rear wheel ED11: 860 grams