Maxxis crossmark mtb tyre exo trthe crossmark is the dramatic evolution of the cross country racing tyre 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 tyre this fast features exo protection fast rolling centre ridge raised side knobs for better cornering size275x2 25 bead folding compound dual tpi60 maximum pressure60psi weight685