Laboratory-tested and competition-proven in the Grand National Cross Country race series. The front tire features a raised center ridge to provide precise steering- while side knob placement offers superb handling and cornering capability. Specially formulated racing compound delivers superior traction while extending tread life. Solid knob design improves traction and reduces tread squirm. Available in both 4-ply and 6-ply for optimum puncture resistance. Two-sided- full-color hot patch on front and rear. Four-time GNCC Pro Class champion Bill Ballance recommends the Razr and Razr 2 tire on all race surfaces for serious cross country racers. Razr - The Champion's Choice.