The balanced tread of the Rock Razor works effortlessly and generously corrects errors - full control on rough terrain as well as on flowing single trails. fast, flat studs in the centre of the tread for good corner grip with sturdy lugs on the tyre shoulders. ADDIX compound for hardcore use in enduro and downhill. Sensationally good damping has been further improved over the previous VertStar compound, while at the same time ADDIX Ultrasoft is suitable for all-weather use due to significantly improved low-temperature properties when it comes to grip and damping. Tubeless ready.