Exhaust Guide
Best Exhausts for the
2005 – 2010 Jeep Grand Cherokee WK: Every Cat-Back Compared
A complete comparison of cat-back exhaust systems for the 2005–2010 Jeep Grand Cherokee WK — covering the 3.7L V6, 4.7L V8, 5.7L Hemi, and 6.1L SRT8. Sound profiles, materials (304 vs 409 stainless vs aluminized), pipe diameter, pricing, and fitment notes from MBRP, Gibson, Borla, MagnaFlow, and CORSA.
At a Glance
Quick Comparison
| Brand / Kit | Sound Profile | Pipe | Material | Fits | Price | |
|---|---|---|---|---|---|---|
| MBRP Installer Series | Street | 3" | Aluminized | 4.7L / 5.7L |
|
SHOP → |
| Gibson Single (4.7L/3.7L) | Moderate | 2.5" | 304 SS | 3.7L / 4.7L |
|
SHOP → |
| Gibson Single (5.7L) | Moderate | 3" | 304 SS | 5.7L Hemi |
|
SHOP → |
| Borla Cat-Back | Touring | 2.5" | 304 SS | 5.7L Hemi |
|
SHOP → |
| MagnaFlow Street Series | Moderate | 2.5" | 304 SS | 5.7L Hemi | $999 | SHOP → |
| Gibson Dual SRT8 | Aggressive | 3" | 304 SS | 6.1L SRT8 |
|
SHOP → |
| CORSA Sport SRT8 | Sport | 2.75" | 304 SS | 6.1L SRT8 |
|
SHOP → |
Important
What to Know Before You Buy
Cat-Back Coverage
The 2005–2010 Jeep Grand Cherokee WK is cat-back only — no axle-back systems are marketed. A cat-back replaces the mid-pipe and mufflers from the catalytic converter back. Full performance gain, improved low-end torque for towing and off-road.
Engine-Specific Fitment
WK fitment varies by engine: 3.7L V6 and 4.7L V8 share one routing; 5.7L Hemi has its own; 6.1L SRT8 (2006–2010) is dual-exit. Gibson offers separate SKUs per engine. Verify your engine before ordering.
Materials: 304 vs 409 vs Aluminized
304 stainless is most corrosion-resistant. 409 stainless is budget-friendly and durable. Aluminized is lowest cost; expect shorter life in salt climates. For long-term ownership, 304 SS is the better choice.
Emissions & Warranty
Cat-back systems install behind the factory catalytic converters, so they’re 50-state emissions legal. No tuning required. Borla offers Million-Mile Warranty; Gibson has Lifetime Limited Warranty on many systems.
MBRP Installer Series Cat-Back Exhaust System: Jeep Grand Cherokee 4.7L & 5.7L Hemi 2005 – 2010
MBRP Installer Series is the most affordable cat-back in this guide. 3-inch mandrel-bent aluminized steel, Street Profile tone. Fits 2005–2010 Jeep Grand Cherokee WK with 4.7L V8 or 5.7L Hemi. Direct bolt-on using OEM hangers. Single-side exit with polished 4-inch rolled angle-cut tip.
Optimizes exhaust flow, reduces temperatures, and delivers a deep, aggressive tone. Ideal for daily drivers and light trail use. Aluminized construction keeps cost down; consider stainless for salt climates. 3-Year Warranty included.
Pros
- Lowest-priced cat-back
- Fits 4.7L and 5.7L; direct bolt-on
- Street Profile; aggressive yet manageable
Cons
- Aluminized (not stainless)
- Single-side exit; not dual
Gibson Single Cat-Back Perf Exhaust SS (REAR): Jeep Grand Cherokee 2005–2010 4.7L/3.7L
Gibson Stainless Steel Single Cat-Back delivers Gibson quality at a mid-range price. Enhances low to mid-range power delivery — ideal for towing and off-road. Fits 2005–2009 Jeep Grand Cherokee 3.7L V6 and 2005–2010 4.7L V8 (Laredo, Limited, 65th Anniversary).
Baffled and chambered Superflow™ muffler minimizes interior drone while delivering an aggressive exhaust note. Polished stainless slash-cut tip. Direct bolt-on; Lifetime Limited Warranty.
Pros
- Best value for Gibson 304 SS
- Improved low/mid-range torque
- Fits 3.7L and 4.7L; Laredo, Limited
Cons
- 3.7L/4.7L only (5.7L has separate SKU)
- Single rear exit
Gibson Single Cat-Back Perf Exhaust Stainless (REAR): Jeep Grand Cherokee 2005–10 5.7L HEMI
Gibson Stainless Steel 3-inch Single Cat-Back for 2005–2010 Jeep Grand Cherokee 5.7L Hemi. Full 304 SS, polished slash-cut tip. Enhances exhaust flow, horsepower, and torque. Fits Laredo, Limited, and Overland trims.
Baffled and chambered muffler reduces interior drone while maintaining an aggressive tone. Direct bolt-on. The top pick for 5.7L Hemi owners who want 304 stainless quality at a competitive price.
Pros
- 304 stainless; USA-made
- 3-inch mandrel-bent; improved flow
- 5.7L Laredo, Limited, Overland
Cons
- 5.7L only (4.7L/3.7L separate)
- Single rear exit
Borla Cat-Back Exhaust: Jeep Grand Cherokee 5.7L Hemi 2005 – 2010
Borla Cat-Back delivers a deep, aggressive V8 growl without interior drone. 2.5-inch T-304 stainless, single 4-inch round bright chrome tip. Fits 2005–2010 Jeep Grand Cherokee 5.7L Hemi (2WD and 4WD). Million-Mile Warranty.
Straight-through multi-core technology improves exhaust velocity, throttle response, and fuel efficiency. Lightweight design — nearly half the weight of stock. Ideal for daily drivers who want a refined exhaust note without highway drone.
Pros
- Deep tone; no cabin drone
- 304 SS; Million-Mile Warranty
- Fits 2WD and 4WD; 5.7L Hemi
Cons
- Mellow tone; not the loudest
- 5.7L only
MagnaFlow Cat-Back Exhaust System: Jeep Grand Cherokee 5.7L Hemi 2005 – 2010
MagnaFlow Street Series Cat-Back delivers a signature deep exhaust note with moderate exterior and mild interior sound levels. 2.5-inch mandrel-bent stainless, two straight-through mufflers. Single passenger-side rear exit with 4-inch polished double-wall angle-cut tips.
Direct-fit design with extensive 3D scanning. CNC precision manufacturing. Balances aggressive tone with refined cabin comfort. 1-year limited finish warranty, lifetime construction warranty.
Pros
- 304 stainless; distinctive tone
- Moderate exterior / mild interior
- Direct-fit; 5.7L Hemi
Cons
- Single rear exit
- 5.7L only
Gibson Dual Cat-Back Perf Exhaust Stainless Dual-Wall Tips (REAR): Jeep Grand Cherokee SRT8 2006–2010 6.1L
Gibson Dual Cat-Back for 2006–2010 Jeep Grand Cherokee SRT8 6.1L. Stainless steel dual rear exit with polished dual-wall slash-cut tips. Enhances low and mid-range power delivery — ideal for towing and spirited driving.
Baffled and chambered aluminized Superflow™ muffler reduces interior drone while delivering a deep, throaty tone. Direct bolt-on. Lifetime Limited Warranty. Best value for SRT8 owners.
Pros
- 304 SS; dual rear exit
- Best value for SRT8
- 2006–2010 6.1L SRT8
Cons
- SRT8 only (2006–2010)
- Aluminized muffler (tubing is SS)
CORSA Sport Cat-Back Exhaust Black Tips (REAR): Jeep Grand Cherokee SRT8 2006–2010 6.1L HEMI
CORSA Sport Cat-Back for 2006–2010 Jeep Grand Cherokee SRT8 6.1L HEMI. Patented Reflective Sound Cancellation® (RSC®) Technology eliminates interior drone while delivering aggressive tone under acceleration. 2.75-inch mandrel-bent 304 stainless, dual 4-inch black Pro-Series slash-cut tips.
17% increase in exhaust flow over stock. 50-state emissions legal. Direct bolt-on. Premium choice for SRT8 owners who want the best sound with zero cabin drone.
Pros
- RSC® Technology; no drone
- 304 SS; 2.75-inch mandrel-bent
- 2006–2010 SRT8 6.1L
Cons
- Premium price
- SRT8 only
Fitment Reference
Which Kits Fit Your Trim?
| Trim / Engine | MBRP | Gibson 4.7 | Gibson 5.7 | Borla | MagnaFlow | Gibson SRT8 | CORSA |
|---|---|---|---|---|---|---|---|
| 3.7L V6 / 4.7L V8 | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ |
| 5.7L Hemi | ✓ | ✗ | ✓ | ✓ | ✓ | ✗ | ✗ |
| 6.1L SRT8 (06–10) | ✗ | ✗ | ✗ | ✗ | ✗ | ✓ | ✓ |
✓ = Confirmed • ✗ = Excluded
Common Questions
Frequently Asked Questions
Why are there no axle-back options for the WK?
The 2005–2010 Jeep Grand Cherokee WK is a cat-back-only platform. Manufacturers offer full cat-back systems. A cat-back provides the complete performance and sound upgrade, and improves low-end torque for towing and off-road.
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. Check with your dealer if concerned.
Do exhaust systems improve towing performance?
Yes. Cat-back systems reduce backpressure and improve exhaust flow, which can improve low-end torque and throttle response. Gibson and MagnaFlow market their WK systems for towing and off-road. Expect modest gains (5–10 HP / lb-ft).
I have a 3.0L V6. What fits?
The 3.0L diesel V6 (2007–2008) has limited aftermarket support. MBRP offers a single-side exit system. Most options in this guide target the 3.7L, 4.7L, 5.7L, and 6.1L gasoline engines.
What causes exhaust drone and how do I avoid it?
Drone is resonance at certain RPMs that amplifies inside the cabin. Borla and CORSA are tuned for no drone. Gibson and MagnaFlow offer moderate tones with minimal drone. MBRP Street Profile can have some drone at cruise. Research sound clips before buying.
304 vs 409 stainless steel: which is better?
304 stainless is more corrosion-resistant and premium. 409 stainless is budget-friendly and still durable. For salt climates or long-term ownership, 304 SS is the better choice. Aluminized is lowest cost but has the shortest life.
Ready to Upgrade Your Jeep Grand Cherokee WK Exhaust?
Compare cat-backs above, pick the right fit for your engine and trim, and order with confidence. Need help? Contact us.
