Two different rubber compounds on the tyre shoulders and in the center of the tread. Incredible grip at full lean, with outstanding braking control and accelerationTwo different compounds on the shoulder and the center of the tyre, optimized for cornering grip, acceleration and breaking. -If purchasing for use at a Hypercycle Trackday, Hypercycle will mount and balance your tires for free the day of the event (applies to wheels removed from motorcycle). *Although we stock this item, we ask that you order 1 week prior to the trackday event to insure delivery.