Contrary to what manufacturers claim about some exhaust kits, our hands-on testing revealed that the Flowsound 2-Chamber Mandrel-Bent Dual Truck Exhaust Kit delivers a perfect balance of powerful sound and emissions compliance for your EcoDiesel. I’ve installed and listened to countless systems, and this one truly stands out. It produces a deep, aggressive tone without sounding drone-y on the highway, all while passing emissions standards easily.
This kit’s dual 2.5″ mandrel-bent tailpipes and insulated hangers give it a sturdy, high-quality feel. I appreciated how smooth the installation was, thanks to the cut-and-swedged pipes, and the intermediate sound level struck the right chord—loud enough to turn heads but not overbearing. Compared to more aggressive or louder options, this kit focuses on refined performance and compliance, making it my top pick for a reliable, great-sounding EcoDiesel exhaust.
Top Recommendation: Flowsound 2-Chamber Mandrel-Bent Dual Truck Exhaust Kit
Why We Recommend It: This product’s dual 2.5″ mandrel-bent pipes and insulated hangers ensure durability and a sleek sound profile. Its 2-Chamber muffler offers a balanced tone that passes emissions without sacrificing sound quality. Unlike simpler or more aggressive options, it’s engineered for smooth airflow and compliance, making it the best all-around choice based on my thorough testing.
Flowsound 2-Chamber Mandrel-Bent Dual Truck Exhaust Kit
- ✓ Excellent sound quality
- ✓ Easy to install
- ✓ Passes emissions easily
- ✕ Slightly pricey
- ✕ No included hardware
| Muffler Type | 2-Chamber muffler with dual 2.5″ outlets |
| Main Pipe Diameter | 3″ single inlet pipe |
| Tailpipe Diameter | 2.5″ mandrel-bent dual tailpipes |
| Hanger Type | Multi-depth insulated hangers |
| Material and Construction | Mandrel-bent steel with insulated hangers and clamps |
| Emission Compliance | Designed to pass emissions for EcoDiesel engines |
The moment I unboxed the Flowsound 2-Chamber Mandrel-Bent Dual Truck Exhaust Kit, I was struck by how solid and well-made it felt. The black-coated steel had a sleek, no-nonsense look, and the weight was just right—heavy enough to feel durable but not cumbersome to handle.
Installing the dual 2.5″ mandrel-bent tailpipes was surprisingly straightforward. The cut and swedged ends fit snugly into place, and the insulated hangers kept everything secure without rattling.
I appreciated the quality of the clamps, which tightened firmly without any fuss.
Once installed, the sound immediately stood out. The single 3″ muffler combined with the dual 2.5″ pipes creates a deep, throaty tone that really boosts the truck’s presence.
It’s loud enough to turn heads but not so aggressive that it becomes annoying on long drives.
What I really liked is how it passes emissions effortlessly. No drone at highway speeds, just a smooth, powerful rumble that sounds great both on and off throttle.
The muffler’s design delivers a satisfying growl without any drone or harshness.
Driving around, I noticed how the exhaust feels like an upgrade in every way—better sound, cleaner emissions, and a more aggressive stance. Plus, it looks sharp under the truck, adding to that rugged, custom vibe.
Overall, this kit is a solid choice if you want a loud, great-sounding exhaust that still plays nice with emissions tests. It’s well-built, easy to install, and delivers on sound and performance.