This Flowmaster® FlowFX® cat-back exhaust system for the 2011-2018 GM 1500 trucks with the 6.2-liter V8 engine is manufactured using durable 409 stainless steel throughout and features single 3.50-inch to dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and a FlowFX "straight-through" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +11 hp and +15 lb-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.
Features:
- Max increases of up to 11 hp and 15 lb-ft over the stock exhaust at the rear wheels
- Single 3.50-inch to dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- 4.50-Inch black ceramic coated tips add a custom look to the truck
- Includes complete hardware and factory styled hangers in the stock locations for an easy installation
- FlowFX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
2011-2018 GM 1500 trucks with 6.2-liter engines. Fits 2 & 4-wheel drive, All Wheelbases.
Installation Notes:
2011-2018 GM 1500 trucks with 6.2-liter engines. Fits 2 & 4-wheel drive, All Wheelbases.
About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Submodel |
Years |
Engine |
| Chevrolet |
Silverado 1500 |
High Country |
2014 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2015 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2016 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2017 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2018 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2011 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2012 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2013 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2014 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2015 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2016 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2017 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2018 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2011 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2012 |
6.2L / 376 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2013 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2011 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2012 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2013 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2014 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2015 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2016 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2017 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
Denali |
2018 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLE |
2011 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLE |
2012 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLE |
2013 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2011 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2012 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2013 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2014 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2015 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2016 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2017 |
6.2L / 376 / V8 |
| GMC |
Sierra 1500 |
SLT |
2018 |
6.2L / 376 / V8 |
