Force II systems are for people who are looking for a complete Cat-back dual exhaust system with a quieter tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. This system delivers a moderate exterior sound and mild interior tone, and is suited to customers looking for efficiency improvements with a noticeable but subtle sound level. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.Features: Mandrel Bent 16 Gauge 409 Stainless Steel Tubing Limited Lifetime Warranty Moderate Exterior Exhaust Tone Includes Hangers and Hardware For Easy Installation Connects After Factory Catalytic Converter Dual Out Rear Exit or Rear Side Exit Dyno Tuned for Maximum PerformanceProduct Description: 07-'13 GM Silverado/Sierra, 1/2 Ton, 5.3L with Flex Fuel, All WB Except Ext. Cab/Long Bed, 09'-13' GM Silverado/Sierra, 1/2 Ton, 5.3L With Flex Fuel, Extra Cab W/6.5' Bed And Crew Cab W/5.5' Bed Only 2/4 Wheel Drive, 2.50" Outlets, Super 50 Series Muffler, 3.00" Logo Embossed Stainless Tips, Force II, Incl. Tube Extensions for DOR and DOS in Kit, Mandrel Bent Tubing, 409S Stainless Steel.Pit Stop USA offers Flowmaster Force II Dual Cat-Back Exhaust System - 2007-13 Chevy Silverado/GMC Sierra 1500 5.3L Flex Fuel V8 817492 at low everyday prices. Be sure to check out all our products from Flowmaster including Flowmaster Chevrolet 2500/3500 Exhaust Systems And Components, Flowmaster Chevrolet Truck / SUV Exhaust Systems and Flowmaster GMC Truck / SUV Exhaust Systems.