Hydraulic V2 has higher doses of L-Citrulline and Beta-Alanine, it also features several new trademarked ingredients including Vasodrive-AP®, Citrapeak®, Hydroprime®, Cognatiq®, AND Astragin®.
Overall, Hydraulic V2 is a much more well-rounded pre-workout with enhanced pumps, hydration, performance, and focus.  Along with the revised formula, the labels have been redesigned to have a more modern look with a raised texture.