C7 Corvette Race SystemNew to the ARH line up for your C7 Corvette are race systems made for Medium to Max Effort Naturally Aspirated, Nitrous Assisted or Supercharged applications producing 650 RWHP N A and 800 RWHP or more with nitrous or supercharger. Eliminating the restrictions at both the collectors and X Pipe will improve HP significantly throughout the rpm range. Bank on it! These ARH race systems now feature 3 1 2" collectors and a 3 1 2" X Pipe that connects using