Single-Exit Cat-Back for the Listed 350Z and G35 Coupe Applications
This Flashark single-exit cat-back is for shoppers choosing the Only Catback Exhaust option. It gives the listed 350Z and G35 Coupe applications a complete rear-section replacement with 3-inch piping and a 4.5-inch flat single tip, while keeping the package distinct from the Header, Test Pipe, Catalytic Converter, and Y Pipe/Downpipe combinations available elsewhere in the selector.
The product facts below apply to SKU FLES08254. Select a combination option only after reviewing that option's own components and vehicle requirements.
Specifications
| SKU | FLES08254 |
|---|---|
| Product Type | Cat-back exhaust system |
| Material | Stainless steel |
| Surface Finish | Mirror polish |
| Piping Size | 3-inch piping |
| Tip Size | 4.5-inch flat single tip |
| Exit Layout | Single-exit cat-back layout with muffler section |
| Installation Style | Bolt-on style |
Key Features
- Single-tip cat-back layout: replaces the rear cat-back section for a cleaner single-exit style and stronger exhaust tone.
- 3-inch piping: designed to reduce restriction compared with many stock exhaust layouts while staying suitable for daily-driven VQ35 builds.
- 4.5-inch flat tip: gives the rear bumper a more aggressive look without calling it a true dual system.
- Detachable double-layer silencer: helps give drivers more control over sound character.
- Stainless steel construction: offers better corrosion resistance than mild steel, though regular cleaning is still recommended in salted-road areas.
- Hardware included: comes with gaskets, bolts, and nuts for the exhaust system installation.
- Cat-back only: does not include headers, downpipes, test pipes, catalytic converters, or a full exhaust conversion unless you choose a separate kit variant.

What's Included and Not Included
| Included with the Only Catback Exhaust Option | Not Included with the Only Catback Exhaust Option |
|---|---|
|
|
Where It Fits in the Exhaust System
This base option is a cat-back exhaust system, not a complete header-back package. It replaces the cat-back section and does not include headers, test pipes, catalytic converters, or downpipe-style components.
If you are considering one of the selectable combination options, review that option separately because it contains a different set of exhaust components from the base cat-back SKU.
Related Parts and Guides
For a different rear-exit appearance, compare the 350Z dual-tip cat-back exhaust before ordering.
If you need a combined exhaust-component package rather than the base cat-back option, review the fitment and included parts for the Flashark all-in-one exhaust kit.
Check Before Ordering
- Confirm that you selected Only Catback Exhaust if you want SKU FLES08254 rather than a combination kit.
- Match your vehicle to the listed make, model, year range, and body style.
- Do not order this system for an Infiniti G35 Sedan.
- For an Infiniti G35 Coupe, confirm the required extension component before ordering.
- Check the existing exhaust routing, mounting points, and any non-stock exhaust parts before installation.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
Fitment & Compatibility
- ⚠️ MANDATORY INSTALLATION NOTE: Extension Pipe is REQUIRED for all 2003-2008 Infiniti G35 Coupe models
- ❌ ABSOLUTELY NOT compatible with Infiniti G35 Sedan models
| Brand | Model | Year Range | Full Compatible Specs |
|---|---|---|---|
| Nissan | 350Z | 2003-2008 | 3.5L VQ35DE V6 Engine; Fits Coupe & Convertible Body Styles |
| Infiniti | G35 Coupe | 2003-2008 | 3.5L VQ35DE V6 Engine; EXTENSION PIPE REQUIRED FOR INSTALLATION |
350Z & G35 Coupe Single-Exit Cat-Back FAQs
Q1: Which option does this product description cover?
A1: This description covers SKU FLES08254, the Only Catback Exhaust option. The other selectable options are combination kits with different components and should be reviewed separately before purchase.
Q2: Will this fit a 2003-2008 Nissan 350Z?
A2: The listed fitment includes 2003-2008 Nissan 350Z Coupe and Convertible applications with the listed 3.5L VQ35DE V6 specification. Confirm the existing exhaust routing and mounting points before ordering.
Q3: Will this fit an Infiniti G35 Coupe?
A3: The listed fitment includes 2003-2008 Infiniti G35 Coupe applications. An extension pipe is required for installation, so confirm that requirement before ordering.
Q4: Will this fit an Infiniti G35 Sedan?
A4: No. This product is not compatible with Infiniti G35 Sedan models. Do not use a Coupe fitment statement as a Sedan fitment confirmation.
Q5: Is this a cat-back exhaust or an axle-back exhaust?
A5: This base SKU is a cat-back exhaust system. It is not presented as an axle-back-only muffler section.
Q6: What does the Only Catback Exhaust option include?
A6: The listed contents are the cat-back exhaust system, gaskets, bolts, and nuts. Check the selected option before purchase because combination kits are different products.
Q7: Does the base option include headers, test pipes, catalytic converters, or a Y pipe/downpipe?
A7: No. Those components are not included with the Only Catback Exhaust option. They belong to separately selectable combination options or separate products.
Q8: What are the listed pipe and tip sizes for the base SKU?
A8: The base SKU is listed with 3-inch piping and a 4.5-inch flat single tip. These specifications apply to FLES08254 only.
Q9: What is the difference between the base option and a combination kit?
A9: The base option is the cat-back exhaust system. Combination options add named exhaust components, so their contents, fitment, and installation requirements must be checked by the specific selected option.
Q10: Is an extension pipe needed for a G35 Coupe?
A10: Yes. The listed G35 Coupe fitment requires an extension pipe for installation. Confirm the required extension component before ordering.
Q11: How is the base cat-back installation listed?
A11: The base SKU is listed as bolt-on style. Inspect the vehicle's current exhaust routing, mounting points, and non-stock parts before beginning installation.
Q12: Are sound, tuning, or check-engine-light outcomes guaranteed?
A12: No product-specific guarantee is stated here for sound level, tuning, or check-engine-light outcomes. Vehicle condition and the rest of the exhaust configuration should be evaluated before modifying the vehicle.






























