Positioned as an endurance racer, the Carbon X2 delivers the same propulsive speed as its predecessor in an adaptable silhouette geared for training and racing alike. Engineered with a responsive, carbon fiber plate and aggressive Meta-Rocker, this performance shoe is a formidable competitor. The epitome of longrange weaponry, the Carbon X2 pairs softer, lighter foam with the same rubberized foam outsole as the last iteration.