350Z Cat Back Exhaust For 2003-2009 Nissan 350Z
A good exhaust should make the car feel sharper without turning every drive into a headache. This system is made for 350Z owners who want a deeper VQ tone, cleaner rear-end appearance, and better exhaust flow while keeping the setup straightforward.
Designed for listed 2003-2009 Nissan 350Z 3.5L models, this cat-back exhaust uses stainless steel construction, mandrel-bent tubing, dual mufflers, and 4.5-inch dual burnt tips. On a healthy stock or lightly modified 350Z, it typically supports an estimated 5-10 HP gain. With supporting parts and a proper tune, around 8-12 HP may be possible depending on the full setup.
Specifications
Check the core specs before ordering. These details matter more than they look on paper, especially if your 350Z already has aftermarket exhaust parts or old factory hardware underneath.
| Brand | Flashark |
| Product Type | Cat-back exhaust system |
| Material | Stainless steel |
| Surface Finish | Mirror polish |
| Piping Size | 2.25-inch inner diameter piping |
| Exhaust Tips | 4.5-inch OD double-walled rolled burnt tips |
| Muffler Layout | Dual mufflers |
| Pipe Design | Mandrel-bent piping for smoother exhaust flow |
| Flange Construction | TIG-welded and CNC-machined flanges |
| Installation Style | Bolt-on style installation, no welding required on listed stock-fit applications |
| Estimated Horsepower Gain | About 5-10 HP on many stock or lightly modified setups. Around 8-12 HP may be possible with supporting mods and tuning. |
| Certificate | ISO9001:2000 |
Key Features
- Cat-back exhaust layout: Replaces the rear exhaust section behind the catalytic converters.
- Dual muffler design: Helps create a deeper tone while keeping the sound more controlled than a straight-pipe style rear section.
- 2.25-inch piping: A practical size for naturally aspirated VQ35 street builds.
- 4.5-inch dual burnt tips: Gives the rear bumper a fuller, more aggressive finish.
- Stainless steel construction: Built for strength, heat resistance, and long-term use.
- Mandrel-bent tubing: Helps maintain smoother exhaust flow through the bends.
- Bolt-on style fitment: Designed to install without custom fabrication on listed stock-fit applications.
Cat-Back Design And Sound Character
This is a 350Z cat-back exhaust system, not just a small axle-back section. It replaces more of the exhaust path behind the catalytic converters, which helps change tone and flow more noticeably than a simple rear muffler swap.
Expect a deeper, more aggressive sound compared with the factory exhaust. The dual muffler layout keeps the tone more street-friendly than a fully straight rear section, though final sound depends on your headers, cats, test pipes, resonators, and engine condition.
4.5-Inch Dual Burnt Tips
The 4.5-inch dual burnt tips give the rear of the 350Z a fuller and more modified look without needing to change the bumper. For many owners, this is the part they notice first after installation: the car looks lower, wider, and more finished from the back.
See how Jake Cande installs dual exhaust! (350Z)
Performance Expectations
On most stock or lightly modified 350Z builds, this exhaust can support an estimated 5-10 HP improvement by reducing restriction in the rear exhaust section. With supporting parts such as an intake, headers, test pipes, or a proper tune, some setups may see around 8-12 HP from the exhaust-side changes working together.
Those numbers are not a fixed dyno promise. Mileage, engine health, ECU calibration, existing exhaust parts, air temperature, and dyno type all change the final result. From a garage point of view, the more noticeable upgrades are usually the stronger tone, cleaner throttle feel, and better high-rpm breathing.
| Setup | Expected Result | Best For |
|---|---|---|
| Stock 350Z with cat-back only | About 5-10 HP, deeper tone, improved rear-section flow | Daily drivers and first exhaust upgrades |
| Intake plus cat-back | Sharper sound and better breathing, especially at higher rpm | Street builds with light bolt-ons |
| Headers, test pipes, cat-back, and tune | Around 8-12 HP may be possible from combined exhaust-side improvements | Owners planning a more complete VQ35 setup |
Single Tip Vs Dual Tip 350Z Catback Exhaust
For a 350Z, the choice between a single-tip and dual-tip catback exhaust is not just about sound. It also changes the rear-end look, weight feel, and the style of the build. A dual-tip setup like this one keeps the back of the car fuller and closer to a factory-style dual-exit appearance, while still giving the VQ35 a deeper aftermarket tone.
| Setup | Best For | What To Expect |
|---|---|---|
| Dual Tip 350Z Catback Exhaust | Owners who want a fuller rear bumper look and a balanced street build | Deeper tone, dual-exit appearance, cleaner OEM+ style, and a more finished rear-end look |
| Single Tip 350Z Catback Exhaust | Owners who prefer a simpler, lighter-looking, more aggressive single-exit style | More minimal rear appearance, often a rawer street-build look, depending on muffler and pipe layout |
Mechanic's Take: If the car still has the factory rear bumper and you want the back end to look filled out, the dual-tip setup usually makes more sense. If you are building a more stripped-down drift-style or track-inspired 350Z, a single-tip catback may fit that look better.
For a more minimal setup, you can also check the Flashark Single Tip Catback Exhaust for compatible 350Z and G35 applications. Choose the dual-tip exhaust on this page if you want the fuller rear-end look, dual muffler layout, and balanced street tone.
Shipping, Warranty & Customer Support
- Estimated Delivery: Most orders are delivered within 7-9 business days after shipment, depending on warehouse availability and destination.
- 1-Year Warranty: This product is backed by a 1-year warranty against manufacturing defects.
- Returns & Fitment Support: Please confirm your vehicle year, model, engine, and drivetrain before ordering. If you are unsure about fitment, contact customer support before purchase.
- Customer Support: Our support team can help with basic fitment questions, order issues, and warranty-related support.
Fitment & Compatibility
| Brand | Model & Trim Level | Year Range | Compatible Body Style |
|---|---|---|---|
| Nissan | 350Z 35th Anniversary Edition | 2005 | 2-Door Coupe |
| Nissan | 350Z Base | 2006 | 2-Door Convertible |
| Nissan | 350Z Base | 2003-2008 | 2-Door Coupe |
| Nissan | 350Z Enthusiast | 2004-2009 | 2-Door Convertible |
| Nissan | 350Z Enthusiast | 2003-2008 | 2-Door Coupe |
| Nissan | 350Z Grand Touring | 2005-2009 | 2-Door Convertible |
| Nissan | 350Z Grand Touring | 2006-2008 | 2-Door Coupe |
| Nissan | 350Z Nismo | 2007-2008 | 2-Door Coupe |
| Nissan | 350Z Performance | 2003-2005 | 2-Door Coupe |
| Nissan | 350Z Touring | 2004-2009 | 2-Door Convertible |
| Nissan | 350Z Touring | 2003-2009 | 2-Door Coupe |
| Nissan | 350Z Track | 2003-2006 | 2-Door Coupe |
350Z Cat Back Exhaust FAQ
Q1: Will this fit my 2003-2009 Nissan 350Z?
A1: This exhaust is designed for listed 2003-2009 Nissan 350Z 3.5L applications. Always confirm your year, body style, trim, and selected variant before ordering, especially if your car has previous exhaust modifications.
Q2: Is this a cat-back exhaust or an axle-back exhaust?
A2: This is a cat-back exhaust system. It replaces more of the exhaust section behind the catalytic converters than an axle-back setup, which helps improve tone, rear-section flow, and overall exhaust character.
Q3: How much horsepower can this 350Z exhaust add?
A3: On many stock or lightly modified 350Z setups, the expected gain is about 5-10 HP. With supporting parts and proper tuning, around 8-12 HP may be possible, but results vary by vehicle condition and full modification setup.
Q4: Will this exhaust make my 350Z too loud for daily driving?
A4: It gives the car a deeper and sportier tone than the factory exhaust. The dual mufflers help keep the sound more controlled than a straight-pipe style rear section, but sound level will be louder if your car also has headers, test pipes, or deleted resonators.
Q5: Does this exhaust include headers or test pipes?
A5: The cat-back-only option does not include headers or test pipes. Some product variants or bundles may include extra exhaust parts, so check the selected variant carefully before purchase.
Q6: Will this trigger a check engine light?
A6: A cat-back exhaust installs behind the catalytic converters and factory oxygen sensors, so it should not trigger a check engine light on a healthy stock emissions setup. Existing sensor issues, test pipes, headers, or other exhaust changes may still affect CEL behavior.
Q7: Is this a full 350Z exhaust system?
A7: It is a cat-back exhaust system, not a complete front-to-rear exhaust package. It replaces the rear exhaust section behind the catalytic converters. If you need headers, downpipes, test pipes, or catalytic converter parts, check the product variant or related exhaust options before ordering.
Q8: Will the 4.5-inch tips fit the factory rear bumper?
A8: The 4.5-inch dual tips are designed to work with the listed 350Z rear exhaust layout. Tip alignment can still vary slightly depending on hanger condition, previous exhaust work, and how the system is tightened during installation.
Q9: Can I install this exhaust at home?
A9: Many experienced DIY owners can install a cat-back exhaust at home with jack stands, basic hand tools, and penetrating oil. If the factory bolts are badly rusted or the car has custom exhaust work, professional installation is the safer choice.
Q10: Do I need a tune after installing this exhaust?
A10: A tune is usually not required for a cat-back-only install. A tune may help if the car also has intake, headers, test pipes, or other airflow changes, but the cat-back by itself is generally a straightforward bolt-on upgrade.
Q11: Is this exhaust good for a stock 350Z?
A11: Yes, it is a practical first exhaust upgrade for many stock 350Z owners who want better sound and a more aggressive rear look without building a fully custom exhaust system.
Q12: Will this fit a G35?
A12: Do not assume 350Z and G35 exhaust fitment is the same. This product page is for the listed Nissan 350Z applications. If you own an Infiniti G35, use a G35-specific exhaust listing or contact customer support before ordering.
Q13: Is this exhaust legal for street use?
A13: Exhaust laws vary by state, county, and inspection rules. A cat-back system usually does not replace catalytic converters, but sound limits and local regulations still apply. Check your local laws before installing.
Q14: What should I check before buying?
A14: Confirm your vehicle year, model, engine, body style, selected variant, and current exhaust condition. Also check whether your car still has the factory exhaust routing or has been modified by a previous owner.
Q15: What should I do if I am not sure about fitment?
A15: Contact customer support before purchase. Send your vehicle year, model, engine, body style, drivetrain details, and photos of your current exhaust if possible. That helps avoid ordering the wrong setup.