Scorpion MX Hard For semi-hard surfaces (unpaved roads or stones) and hard roadways (rock). Full efficiency in every condition: race, training or just for fun! The block design ensures maximum adaptation to the road, maximum grip when braking and in bends. Wider blocks on the rear tire for maximum acceleration in every situation. High resistance to abrasion for consistent performance until the end of the race. Tire tread and compound are the result of cooperation with the most prestigious participants of MX races.