The MagnaFlow Competition Series Exhaust Systems are designed for those seeking maximum performance, reduced mass and an aggressive exhaust note that demands attention. A High Temp Satin Black Coating provides an aggressive unique style and added protection. These systems may not comply with all local or federal noise requirements. Competition Series Cat-Back Performance Exhaust System; 2.5 in.; Incl. Tubing/Hardware/Dual 3.5 in. Round Tips; Quad Split Rear Exit; Stainless; The Race Series Stainless Exhaust System is designed to remove the muffler eliminating unwanted backpressure and creating a loud very aggressive racecar exhaust sound.