Your go-to mountain bike tyre for loose, rocky, rough trails -- wet or dry -- the XR4 Comp mountain bike tyre is designed to out-corner any XC tyre on the market, with aggressive tread design, deep, lateral cupped blocks, long shoulder blocks & buttressed tread block edges. Key Features Large braking surface for increased traction Sipe & dimple design increases traction in wet or dry conditions Open tread spacing is self-cleaning Excels in loose & rocky conditions