Mavic Crossmax XL WTS Disc Mountain Wheelset Mavic delivers the WTS (Wheel Tire System) to enduro racers Maxtal aluminum alloy rims offer a higher strength-to-weight ratio than conventional 6106 alloy SUP welded rims with optimized extrusion increase the rim joint strength, provide superior wheel balance and eliminate vibration when braking Inter Spoke Milling (ISM) creates a lighter rim for easier and faster climbing and reduces inertia for instant and effortless acceleration