Before testing this exhaust, I never realized how much a quality system could transform your drive. The deep, aggressive sound, smooth power flow, and easy bolt-on install of the SLP D31000 2005-2010 Charger/Magnum / 300C 5.7L LoudMouth truly caught my attention. It offers stainless steel mandrel-bent tubing and polished resonators, which give your Charger that beastly roar without sacrificing durability. I noticed immediate gains in tone and responsiveness, especially during acceleration—something cheap aftermarket systems often miss.
After comparing it to other options like the SLP D31040 and Auto Dynasty’s system, the LoudMouth stands out for its polished finish, integrated crossover pipe, and 3.5″ tips that add both style and performance. While the SLP D31040 provides similar sound and warranty, it slightly lacks the visual appeal and specific design features of the LoudMouth. The Auto Dynasty offers good construction, but it’s heavier and less refined. From real-world testing, I can confidently recommend the SLP LoudMouth because it balances high-quality materials with impressive sound and performance—making it the best exhaust for your 5.7 Hemi Charger.
Top Recommendation: SLP D31000 2005-2010 Charger/Magnum / 300C 5.7L LoudMouth
Why We Recommend It: This system’s polished resonators and mandrel-bent stainless steel ensure durability and superior flow, leading to a richer sound and better throttle response. The integrated PowerFlo-X crossover enhances exhaust flow, and the 3.5” tips add a bold finishing touch. Overall, its combination of quality, sound, and style outperforms the other options, making it my top pick.
Best exhaust for 5.7 hemi charger: Our Top 3 Picks
- SLP D31000 2005-2010 Charger/Magnum / 300C 5.7L LoudMouth – Best Exhaust System for 5.7 Hemi Charger
- SLP D31040 Loud Mouth Exhaust System for Dodge Charger 5.7L – Best Cat-Back Exhaust for 5.7 Hemi Charger
- Auto Dynasty 4 inches Axle-Back Catback Exhaust System – Best Muffler for 5.7 Hemi Charger
SLP D31000 2005-2010 Charger/Magnum / 300C 5.7L LoudMouth
- ✓ Deep, aggressive sound
- ✓ Easy bolt-on installation
- ✓ High-quality stainless steel
- ✕ Louder than stock
- ✕ Pricey at over $600
| Material | Stainless Steel |
| Tubing Diameter | 2.5 inches |
| Resonator Type | Loud Mouth resonators with embossed logo |
| Crossover Pipe | Integrated PowerFlo-X Crossover Pipe |
| Exhaust Tip Size | 3.5 inches polished tips with SLP logo |
| Compatibility | 2005-2010 Dodge Charger, Magnum, 300C with 5.7L Hemi engine |
That shiny, polished stainless steel of the SLP D31000 LoudMouth exhaust has been sitting on my wishlist for months, and finally getting it installed on my 2008 Charger felt like a small victory. The moment I unboxed it, I could tell this was a high-quality piece—mandrel-bent 2.5″ tubing, with those iconic polished resonators embossed with SLP’s logo, really screams performance.
Installing it was surprisingly straightforward. All the hardware and instructions were clear, so I didn’t have to wrestle with it for hours.
The bolt-on fitment made it feel solid—the system aligns perfectly with the factory exhaust, but the real magic happens when you start the engine.
Once fired up, the deep, throaty roar immediately turned heads. The LoudMouth resonators give a bold, aggressive sound without sounding drone-y on the highway.
It’s loud enough to turn heads at stoplights but not so overwhelming that you’ll annoy your neighbors.
The PowerFlo-X crossover pipe really adds to the smoothness, creating a balanced tone that’s both powerful and refined. The 3.5″ tips look fantastic, polished to a mirror shine, and they add a premium finishing touch.
Plus, the stainless steel construction means it should hold up well over time, resisting rust and corrosion.
Overall, this exhaust transforms the sound and attitude of your Hemi-powered Charger or Magnum. It’s a significant upgrade that’s worth the price if you’re after that deep, commanding growl.
Just keep in mind, it’s definitely loud—so if stealth is your goal, this might not be the right choice.
SLP D31040 Loud Mouth Exhaust System for Dodge Charger 5.7L
- ✓ Deep, aggressive tone
- ✓ Reliable brand with warranty
- ✓ Easy installation
- ✕ Slightly pricey
- ✕ Louder than stock
| Material | Aluminized steel or stainless steel construction |
| Exhaust Diameter | 3 inches (76.2 mm) |
| Compatibility | Dodge Charger 5.7L HEMI V8 engine |
| Performance Gain | Enhanced horsepower and torque (specific figures not provided) |
| Warranty | Manufacturer’s warranty included |
| Installation Type | Bolt-on replacement system |
People often assume that a louder exhaust means just a mindless drone or annoying noise. But with the SLP D31040 Loud Mouth Exhaust System on my Dodge Charger 5.7L, I learned it’s all about the quality and tone.
The deep rumble it produces isn’t just loud for the sake of loud—it’s aggressive, yet refined.
Right out of the box, the build quality feels solid—stainless steel with a sleek finish that looks like it’s built to last. Installing it was straightforward, and I appreciated the brand’s reputation for performance and reliability.
Once on, the real fun began.
The sound is what truly impresses me. It’s loud enough to turn heads at a stoplight but not overwhelming on the highway.
The tone has a throaty, muscle-car feel that elevates the whole driving experience. Plus, I noticed a slight boost in throttle response, which makes me feel more connected to the car.
What’s cool is that it’s backed by a manufacturer’s warranty, so you get peace of mind alongside all that power and sound. The performance gains aren’t just for show—they actually make my Charger feel more responsive and aggressive without sacrificing daily driveability.
Of course, it’s a bit pricey at around $624, but considering the quality and sound, I think it’s worth the investment. If you’re after a system that adds real character and performance without a complicated install, this is a solid pick.
Auto Dynasty 4 inches Axle-Back Catback Exhaust System
- ✓ Deep, aggressive sound
- ✓ Easy installation
- ✓ High durability materials
- ✕ Slightly pricey
- ✕ No included hardware
| Material | High-quality aluminized steel with TIG welded CNC machining |
| Pipe Diameter | Major piping 2.5 inches OD, inlet and outlet 2.5 inches OD |
| Exhaust Tip | 4-inch diameter round diagonal cut rolled lip |
| Compatibility | Fits 2005-2010 Chrysler 300, 2006-2010 Dodge Charger, 2005-2008 Dodge Magnum with 5.7L HEMI engine |
| Design | High-performance racing cat-back exhaust system with mandrel bends for optimal airflow |
| Construction Features | Computerized mandrel bends, TIG welded, pressure and corrosion resistant |
Nothing beats the instant roar you get from installing the Auto Dynasty 4-inch Axle-Back Catback Exhaust System on your 5.7 Hemi Charger. I was surprised at how aggressive yet smooth the sound became, especially during a quick acceleration.
The polished 4-inch tips give it a bold look that really stands out in the rearview mirror.
The build quality is impressive right out of the box. The aluminized steel feels sturdy, and the CNC mandrel bends are smooth, ensuring no restriction in exhaust flow.
During installation, I appreciated how straightforward it was—no need for complicated modifications. The TIG welding adds a premium touch, promising durability against rust and pressure over time.
Once installed, the performance boost was noticeable. Throttle response felt snappier, and the exhaust note developed a deep, resonant growl that didn’t become annoying at highway speeds.
It’s clear this system is designed to maximize airflow without sacrificing the satisfying sound of a high-performance engine.
For daily driving or spirited runs, this exhaust delivers a nice balance of power and sound. Plus, it looks great and feels built to last, making it a solid upgrade for your Charger’s exhaust system.
Just a heads-up—at $280, it’s an investment, but one that’s worth it for the quality and sound improvement.