SPEED FOCUSED XC MOUNTAIN Directional siping on every knob for improved grip EDM improves mud clearing Ultimate and Premium levels M:Wall protective casing DYNAMIC:A/T compounding e25 ready When it’s time to drop the hammer and crush some climbs Peak is mountain biking’s speed demon. A round profile close-spaced tread and supple casing contribute to low rolling resistance while ample traction and braking performance are delivered thanks to siping on every knob and its multi-dimensional Dynamic:A/T compound. Size: 27.5 x 2.25'