Sure to prove a big hit, the Maxxis Crossmark 27.5 x 2.1 Folding Bead Bike Tyre from the great Maxxis is a smart option this season. Grab yours today or check out the full range for more exciting options. The CrossMark is the dramatic evolution of the cross country racing tire. The nearly continuous centre ridge flies on hardpack, yet has enough spacing to grab wet roots and rocks. The slightly raised ridge of side knobs offers cornering precision never before seen on a tire this fast.