Scorpion MX Extra J For training or just for fun! Optimized tire tread for improved acceleration and grip on a wide variety of mixed lanes. Adaptability to soft and slippery surfaces thanks to the wide spacing of the blocks. Tire tread and compound are the result of cooperation with the most prestigious participants of MX races. Mini-Cross sizes for motorcycles between 50cc and 100cc with the technical features and the profile of the already well-known Scorpion MX EXTRA.