Maxxis crossmark tyre lustdesigned with world champion christoph sauser the crossmark is the dramatic evolution of the cross country racing tire the nearly continuous center 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 featureslust technologyfast rolling center ridgeraised side knobs for better corneringsize 26 x 21tpi 120max psi 60durometer 70abuy m