Maxxis Tread Lite Dual Compound EXO Tubeless Ready Folding Bead 120TPI Bicycle Tire XC racing tire, ideal for dry hardpack Fast Rolling center with ample side knobs DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required