Mavic 2015 Crossmax XL WTS Mountain Bicycle Rear Wheel (Black - 27.5) 23 mm wide rim with Fore drilling, 24 beefy Zicral spokes. Crossmax Quest tyres with Contact Compound and Guard + New optimized rim extrusion with ISM weight reduction, Zicral aluminum spokes, lighter and stronger Light UST Ready tyres, Full UST rim, with UST Ready tyres, Full hub compatibility: 9/15/20 up front Weight : 26? 870g, 27.5? 895g, 29? 930g (pair of wheel)