aFe MACH XP 3in SS Cat-Back Exhaust | GM Colorado/Canyon I4-2.8L (16-18) (49-44100-B)Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Large Bore HD Turbo Back Exhaust System. aFe dyno tests every system for maximum gains, and constructs them from mandrel bent stainless steel for maximum flow and long lasting durability. Features: Greater exhaust flow than stock system Increases horsepower and torque Improves performance Lowers exhaust gas temperature Flow