Increased robustnessThe 30mm aluminium rim with FORE & PFP technologies make the Crosstrail SL an indestructible trail wheel. More responsive and dynamicThe reduced inertia of the rim combined with INFINITY hub technology means instant accelerationUltra VersatileISM4D rim lightening and spoking technology make the Crosstrail SL one of the most versatile trail wheels in its classMaxtal aluminium alloyLight and strong. Exclusive to Mavic, this specific aluminium alloy offers a higher strength to weight ratio than the conventional 6106 alloy.ISM 4D Light Rim TechnologyInter Spoke Milling 4 Dimensions (ISM 4D) is an exclusive Mavic patented concept. The ISM 4D significantly reduces weight and inertia without compromising durability. Quicker accelerations, better handling; the right mix to make the most of any ride. The smooth profile also helps reduce aerodynamic drag.Fore Tapeless Tubeless TechnologyStiffer and Stronger. Instead of being drilled, the lower rim bridge is pushed up on the i