For fast, hardpack cyclocross courses, look no further than the Trigger Tubular tire from Specialized. Small file-tread center lugs progress outwards to large, aggressive knobs on the tires shoulders providing smooth, predictable transitions and sure-footed grip in the corners. The 260 thread-per-inch casing is as supple as they come, and tubular construction offers incredibly low rolling resistance and virtually pinch flat-free riding.