Exhaust Guide
Best Exhausts for the
2005 – 2008 Dodge Magnum: Every Cat-Back Compared
A complete comparison of cat-back exhaust systems for the 2005–2008 Dodge Magnum — covering the 5.7L Hemi R/T and 6.1L SRT8. Sound profiles, materials (304 vs 409 stainless), pipe diameter, pricing, and fitment notes from CORSA, Borla, Flowmaster, MagnaFlow, and JBA.
At a Glance
Quick Comparison
| Brand / Kit | Sound Profile | Pipe | Material | Fits | Price | |
|---|---|---|---|---|---|---|
| JBA Cat-Back 5.7L | Sport | 2.5" | 409 SS | 5.7L Hemi |
|
SHOP → |
| JBA Cat-Back 6.1L | Sport | 2.5" | 409 SS | 6.1L SRT8 |
|
SHOP → |
| Flowmaster American Thunder | Aggressive | 2.5" | 409 SS | 5.7L Hemi |
|
SHOP → |
| MagnaFlow Cat-Back | Street | 2.5" | 304 SS | 5.7L Hemi | $1,460 | SHOP → |
| Borla S-Type | S-Type | 2.5" | 304 SS | 5.7L Hemi |
|
SHOP → |
| Borla ATAK 6.1L | ATAK | 2.75" | 304 SS | 6.1L SRT8 |
|
SHOP → |
| CORSA Extreme | Xtreme | 2.5" | 304 SS | 5.7L Hemi |
|
SHOP → |
Important
What to Know Before You Buy
Cat-Back Coverage
The 2005–2008 Dodge Magnum is cat-back only — no axle-back systems are marketed for this platform. A cat-back replaces the mid-pipe and mufflers from the catalytic converter back. Full performance gain, 50-state emissions legal.
Sound Profile & Drone
Aggressive systems can drone at highway cruise. CORSA’s RSC (Reflective Sound Cancellation) and Borla’s designs reduce drone. Research sound clips and reviews before buying. Drone-free options (CORSA Extreme) cost more but improve daily drivability.
Materials: 304 vs 409 Stainless
304 stainless is more corrosion-resistant and premium. 409 stainless is budget-friendly and still durable. Aluminized is lowest cost; expect shorter life in salt climates. For long-term ownership, 304 SS is the better choice.
5.7L vs 6.1L SRT8
Magnum R/T (5.7L Hemi) and SRT8 (6.1L) use different exhaust routing. Most systems are engine-specific. JBA, Borla, and CORSA offer separate SKUs for 5.7L and 6.1L. Verify fitment before ordering.
JBA Cat-Back Exhaust System: 300 / Charger / Magnum 5.7L Hemi 2005 – 2010
JBA’s Cat-Back Exhaust is the most affordable cat-back in this guide. Mandrel-bent 409 stainless, dual rear exit, sport-oriented sound. Fits 2005–2008 Dodge Magnum, 2005–2010 Chrysler 300, and 2006–2010 Dodge Charger with the 5.7L Hemi. USA-made with a reputation for fitment.
Replaces restrictive factory components for improved flow and a more aggressive note without overwhelming cabin noise. Direct bolt-on using factory hanger locations. Best value for Magnum R/T owners on a budget.
Pros
- Lowest-priced cat-back
- 409 SS; USA-made
- Sport sound; direct bolt-on
Cons
- 409 SS (not 304)
- 5.7L Hemi only; excludes SRT8
JBA Cat-Back Exhaust System: 300 / Charger / Magnum 6.1L SRT8 2006 – 2010
JBA’s Cat-Back for 6.1L SRT8 delivers strong value for Magnum SRT8 owners. Mandrel-bent 409 stainless, dual rear exit, sport sound. Fits 2006–2008 Dodge Magnum SRT8, Chrysler 300C SRT8, and Dodge Charger SRT8. USA-made.
Replaces factory exhaust with high-flow tubing and performance mufflers. Improved throttle response and a more aggressive note. Best price-to-quality ratio for SRT8 in this guide.
Pros
- Best value for SRT8
- 409 SS; USA-made
- Direct bolt-on
Cons
- 409 SS (not 304)
- 6.1L SRT8 only; 2006+ (no 2005 SRT8)
Flowmaster American Thunder Exhaust System: 300 / Charger / Magnum 5.7L Hemi 2005 – 2010
Flowmaster American Thunder delivers Flowmaster’s signature deep, aggressive tone for 5.7L Hemi Magnums. Dual 2.5-inch mandrel-bent tubing, Scavenger Series X-pipe, Super 40 mufflers. 4-inch polished tips. Lifetime Limited Warranty. One of the best-sounding systems in the mid-price range.
Fits 2005–2008 Dodge Magnum R/T, Chrysler 300C, and Dodge Charger R/T (2006–2010). Bolt-on using factory hanger locations. 409 stainless; expect Flowmaster’s muscular tone.
Pros
- Flowmaster signature deep tone
- Lifetime Limited Warranty
- Best sound in mid-price range
Cons
- 409 SS (not 304)
- 5.7L Hemi only
Magnaflow Cat-Back Exhaust System: Dodge Charger / Magnum 5.7L Hemi 2005 – 2010
MagnaFlow Street Series Cat-Back delivers an aggressive yet refined exhaust note. 2.5-inch mandrel-bent stainless tubing, three straight-through mufflers, dual split rear exit with 4-inch polished tips. 3D-scanned for perfect fit. Lifetime construction warranty.
Fits 2005–2008 Dodge Magnum R/T and Dodge Charger R/T (2005–2010). Full 304 stainless. Balanced power, tone, and drivability. CNC precision manufacturing.
Pros
- 304 stainless; lifetime warranty
- Aggressive yet refined tone
- Direct-fit; no modifications
Cons
- 5.7L Hemi only
- Can drone at cruise (no RSC)
Borla S-Type Exhaust System w/5" Rolled Edge Tips: Chrysler 300C / Dodge Charger / Dodge Magnum 2005 – 2010 (5.7L Hemi)
Borla S-Type delivers a race-bred sound with deep, aggressive tone and no cabin drone. Mandrel-bent T-304 stainless, 5-inch rolled-edge chrome tips. Million-Mile Warranty. Fits RWD and AWD Magnum R/T. The top pick for 5.7L Hemi Magnum owners who want premium build and refined sound.
Lightweight system with superior flow, increased horsepower, and signature Borla performance. Fits 2005–2008 Dodge Magnum, Chrysler 300C, and Dodge Charger (2006–2010) with 5.7L Hemi.
Pros
- Best balance of sound and refinement
- 304 SS; Million-Mile Warranty
- No cabin drone; 5" tips
Cons
- 5.7L Hemi only
- Premium price
Borla Cat-Back Exhaust ATAK: Chrysler 300 / Dodge Charger & Magnum 6.1L SRT8 2006 – 2010
Borla ATAK is Borla’s loudest, most aggressive sound profile. 2.75-inch mandrel-bent T-304 stainless, Merge X-Pipe. ATAK (Acoustically-Tuned Applied Kinetics) technology produces maximum performance and head-turning sound. No interior drone. Million-Mile Warranty.
Fits 2006–2008 Dodge Magnum SRT8, Chrysler 300C SRT8, and Dodge Charger SRT8. Engineered for HEMI-powered sedans and wagons. For enthusiasts who want to be heard as well as felt.
Pros
- Borla’s loudest sound profile
- 304 SS; Million-Mile Warranty
- No cabin drone
Cons
- 6.1L SRT8 only; 2006+
- Premium price
Corsa Extreme Cat-Back Exhaust (Polished): Chrysler 300C / Dodge Charger / Magnum 5.7L Hemi 2005 – 2010
CORSA Extreme delivers CORSA’s most aggressive sound with zero drone. Patented RSC (Reflective Sound Cancellation) technology cancels resonant frequencies. 2.5-inch straight-through 304L stainless, 61% more flow over stock. Up to 10 HP / 13 lb-ft gains, ~10 lbs lighter. 3.5-inch polished Pro-Series dual wall tips.
Fits 2005–2008 Dodge Magnum R/T, Chrysler 300C, and Dodge Charger R/T (2006–2010). Made in Berea, Ohio. The go-to for aggressive sound with daily-driver comfort.
Pros
- Xtreme sound with no cabin drone
- RSC technology; 304 SS
- Measurable power gains; USA-made
Cons
- Premium price
- 5.7L Hemi only
Fitment Reference
Which Kits Fit Your Trim?
| Trim | JBA 5.7L | JBA 6.1L | Flowmaster | MagnaFlow | Borla S-Type | Borla ATAK | CORSA Extreme |
|---|---|---|---|---|---|---|---|
| Magnum R/T 5.7L Hemi | ✓ | ✗ | ✓ | ✓ | ✓ | ✗ | ✓ |
| Magnum SRT8 6.1L | ✗ | ✓ | ✗ | ✗ | ✗ | ✓ | ✗ |
✓ = Confirmed • ✗ = Excluded
Common Questions
Frequently Asked Questions
Why are there no axle-back options for the Magnum?
The 2005–2008 Dodge Magnum platform shares its exhaust architecture with the Chrysler 300 and Dodge Charger of the same era. Manufacturers typically offer cat-back systems for this platform; axle-backs are not commonly marketed. A cat-back provides the full performance and sound upgrade.
Will an aftermarket exhaust void my warranty?
Cat-back systems install behind the factory catalytic converters and do not affect emissions equipment. They generally do not void the vehicle warranty. Modifications that alter emissions (headers, removing cats) can affect warranty. Check with your dealer if concerned.
Do exhaust systems add horsepower?
Yes. Cat-back systems typically add 5–15 HP and similar torque by reducing backpressure and improving flow. Gains vary by vehicle and system. CORSA and Borla publish dyno results; expect roughly 8–12 HP for the Magnum.
What causes exhaust drone and how do I avoid it?
Drone is resonance at certain RPMs (often 1,500–2,500) that amplifies inside the cabin. Aggressive mufflers can increase drone. CORSA’s RSC technology and Borla’s designs reduce or eliminate it. Research sound clips and reviews before buying.
304 vs 409 stainless steel: which is better?
304 stainless is more corrosion-resistant and premium; better for long-term ownership and salt climates. 409 stainless is budget-friendly and durable; fine for most conditions. JBA and Flowmaster use 409; Borla, MagnaFlow, and CORSA use 304.
I have a Magnum SRT8. What exhaust fits?
SRT8 (6.1L) requires a dedicated system. Options in this guide: JBA Cat-Back 6.1L (best value), Borla ATAK 6.1L (most aggressive). MagnaFlow also offers a 6.1L SRT8 cat-back (16642). 5.7L systems do not fit the 6.1L.
Ready to Upgrade Your Dodge Magnum Exhaust?
Compare cat-backs above, pick the right fit for your engine (5.7L or 6.1L SRT8) and budget, and order with confidence. Need help? Contact us.
