This Rebel Series exhaust is a dual, middle - side exit system for the 2009 - 2018 GM SilveradoSierra 1500 Crew CabLong Bed and delivers 14 horsepower and 17 lbs. x ft. of torque as measured on our in - house dyno. 3 into dual 2 - 12 mandrel bent stainless steel tubing and high flow muffler offers maximum flow, increases horsepower and torque while producing a powerful sound. Finished with dual 3 polished, stainless steel tips exit in front of the rear passenger tire for a unique, aggressive look. Includes all necessary hardware and clamps for a hassle - free install.