Performance Muffler Flowmaster Stainless Steel complete-line-kit 2009-2013 GMC Sierra 1500 325

2009-2013 GMC Sierra 1500 325 CID

1979-1980 GMC C2500 454 CID

7L V8 only

OEM - 15823118

1978-1984 Chevrolet Impala 305 CID

Performance Muffler Flowmaster Stainless Steel complete-line-kit 2009-2013 GMC Sierra 1500 325Overview: Outlaw series Outlaw mufflers are designed to be connected directly to the header collectors or can be added into an existing exhaust system. Recommended for racing applications where a muffler is required without a set decibel limit to be met. Features: Max Dyno Gains of 5 HP and 7 Lb. Ft. Torque Provides Maximum Clearance for Off Roading Mandrel Bent Pipe Increases Exhaust Flow and Performance Stainless Steel Construction Offers Great