The Razr is competition-proven and performs best when pushed to the limit in all terrain types. Razr's solid knob design improves traction and reduces tread squirm. The Maxxis Razr Rear Tire features the same puncture resistant design as the front tire, but with a wider profile for instant traction and increased grip during acceleration and braking. Race proven in the Grand National Cross Country race series. Racing compound delivers superior traction while extending tread life. Solid knob design improves traction and reduces tread squirm. The front tire features a raised center ridge to provide precise steering, while side knob placement offers superb handling and cornering capability. 6-ply rating.