aFe 49-44098-B Rebel Series 3 IN to 2-1/2 IN 409 Stainless Steel Cat-Back Exhaust SystemaFe 49 44098 B Rebel Series 3 IN to 2 1 2 IN 409 Stainless Steel Cat Back Exhaust System This Rebel Series exhaust is a dual, middle side exit system for the 2009 2019 GM Silverado Sierra 1500 Crew Cab Long Bed and delivers +14 horsepower and +17 lbs. x ft. of torque as measured on aFe Powers in house dyno. 3" into dual 2 1 2" mandrel bent stainless steel tubing and high flow muffler offers maximum flow, increases horsepower and torque while producing