RAZR M931 and M932 MX tires are made of high quality rubber material that is durable and reliable on the road. These tires are suitable for ATV Motocross Racing events such as the Grand National Cross Country race. Maxxis RAZR M931 and M932 MX tires feature front tires that are engineered for precise steering, on-line stability and traction. Cheng Shin RAZR M931 and M932 MX tires feature rear tires which are designed for acceleration and optimal traction. They are available in 4 Ply and 6 Ply ratings, and are formulated to conquer the most difficult motocross conditions.