Red Stripe: Motocross competition tire. Developed in cooperation with many professional motocross riders on different tracks. TERRA FORCE-MX SM is a motocross tyre for varied conditions, from soft to medium. These feature a tapered knob design that chisels its way through the soft ground to get traction. The high well-spaced knobs are tied at the base to be reinforced for a longer life. The front and rear tyres are designed in a similar way but with differences that work well together.