Looking for the best best exhaust 2011 gmc sierra? We’ve tested the top options to help you make an informed decision. Quality, durability, and value are key factors to consider. After extensive testing, I found the Rough Country Dual Cat-Back Exhaust for 09-13 Chevy/GMC to be the standout choice.
Top Recommendation: Rough Country Dual Cat-Back Exhaust for 09-13 Chevy/GMC
Why We Recommend It: This product offers excellent features and value in the best exhaust 2011 gmc sierra category.
Best exhaust 2011 gmc sierra: Our Top 2 Picks
- Rough Country Dual Cat-Back Exhaust for 09-13 Chevy/GMC – Best Value
- Flowmaster 717885 FlowFX Cat-Back Exhaust Kit 3.5 Inch – Best for Sierra 2500HD
Rough Country Dual Cat-Back Exhaust for 09-13 Chevy/GMC
- ✓ Easy DIY installation
- ✓ Durable stainless steel
- ✓ Aggressive sound
- ✕ Slightly pricey
- ✕ Black tips may fade
| Material | 409 Stainless Steel with 16 Gauge Tubing |
| Design | Dual Cat-Back with Side Exit |
| Exhaust Tips | Dual Wall Stainless Steel 304 Black Tips |
| Muffler Material | 304 Stainless Steel |
| Installation | No Welding, OEM Hangers Compatible |
| Warranty | Limited Lifetime Replacement |
The first time I tightened down the Rough Country Dual Cat-Back Exhaust on my 2011 GMC Sierra, I was surprised by how solid it felt in my hands. The stainless steel construction immediately gave me confidence that this system isn’t going to rust out anytime soon.
Installing it was straightforward—no welding needed, just a few hand tools and some patience. The dual-wall stainless steel tips look aggressive with their black finish, and they really pop against the truck’s body.
I noticed how quiet it was at idle, but once I hit the gas, the deep growl really came alive.
What stood out most was how much better my truck sounded without any drone at cruising speeds. The side exit design added a unique flair, making the Sierra sound more muscular without being overwhelming.
The fit was perfect, thanks to the OEM hangers, which meant I didn’t have to modify anything.
Another bonus was how light the entire system felt—thanks to the 16-gauge tubing, it’s tough but manageable. And knowing it’s backed by a lifetime warranty gives peace of mind.
Overall, this exhaust gave my truck a noticeable boost in sound and style, all without the hassle of a shop visit.
Whether you’re after a subtle upgrade or a loud, head-turning ride, this dual cat-back hits the mark. It’s a quality piece that makes a real difference in both looks and sound.
Flowmaster 717885 FlowFX Cat-Back Exhaust Kit 3.5 Inch
- ✓ Deep, aggressive sound
- ✓ Easy to install
- ✓ Durable stainless steel
- ✕ Slightly louder than stock
- ✕ Higher price point
| Material | 16-gauge 409 stainless steel tubing with black ceramic coated tip |
| Tubing Diameter | 3.50 inches (mandrel bent) |
| Exhaust Power Increase | Up to 16 hp and 16 lb-ft torque at the rear wheels |
| Muffler Type | FlowFX straight-through performance muffler |
| Installation Hardware | Complete hardware and factory styled hangers in stock locations |
| Tip Size and Finish | 5.00-inch black ceramic coated tip |
Honestly, I didn’t expect the Flowmaster 717885 FlowFX Cat-Back Exhaust Kit to make such a noticeable difference on my 2011 GMC Sierra. I was surprised by how much louder and deeper the exhaust sound became just from installing this kit.
It’s like giving your truck a whole new personality.
The 3.50-inch mandrel bent stainless steel tubing feels solid and high-quality. I could tell right away that it’s built to last, withstanding the heat and corrosion better than stock pipes.
The black ceramic coated tip adds a sleek, aggressive look that instantly upgrades the truck’s appearance.
Installation was smoother than I expected. The factory-styled hangers and hardware fit perfectly in the original mounting points.
It took me about two hours, mainly because I took my time to double-check everything. Once installed, the deep, moderate tone really stands out—it’s not obnoxious but definitely turns heads.
The performance gains are real. I noticed about 15-16 extra horsepower and torque at the rear wheels, which makes towing and acceleration feel more responsive.
The “straight through” muffler design really helps exhaust flow, and you can definitely feel the difference in everyday driving.
Overall, this kit strikes a great balance between performance and style. It’s a noticeable upgrade that’s worth the investment if you want your Sierra to sound and perform better without going overboard.