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Flashark 350Z/G35 Y Pipe Downpipe Exhaust/Test Pipes Overview
A freer-flowing exhaust setup helps the VQ35 breathe better, sound deeper, and respond more sharply when the stock exhaust section starts to feel restrictive. This Flashark Y Pipe Downpipe Exhaust/Test Pipes kit is built for 2003-2009 Nissan 350Z 3.5L and listed 2005 and 2007 Infiniti G35 applications, giving owners a direct upgrade path for a cleaner-flowing, more aggressive exhaust setup.
On a healthy VQ35 build, this upgrade can support an estimated 10-15 HP and 5-10 ft-lbs of torque, depending on the catback, front exhaust setup, tune, engine condition, and installation quality. Most drivers will notice the change as a stronger exhaust tone, sharper throttle response, and better pull through the upper rpm range.
Specifications
| Brand | Flashark |
| Application | Y Pipe Downpipe Exhaust/Test Pipes |
| Model | DP29316 |
| Material | 16-gauge T-304 stainless steel |
| Finish | Mirror polished stainless steel finish |
| Inlet Side | 2.5" |
| Outlet Side | 3.0" |
| Construction | Mandrel-bent tubing, TIG-welded joints, CNC-machined flanges |
| Flanges | CNC-machined and chrome-plated for strength, sealing, and corrosion resistance |
| Estimated Power Gain | 10-15 HP and 5-10 ft-lbs of torque, depending on setup and condition |
Key Features
- 10-15 HP and 5-10 ft-lbs estimated gain: A cleaner-flowing exhaust path can help the VQ35 pick up power when the rest of the setup supports it.
- Large-diameter free-flow tubing: Helps reduce exhaust restriction and keeps gases moving smoothly through the front and mid exhaust section.
- Deeper VQ exhaust tone: Adds a stronger, more aggressive sound without relying on exaggerated performance claims.
- 16-gauge T-304 stainless steel: Built for heat, vibration, and long-term use under the car.
- Computerized mandrel bends: Helps maintain consistent tubing shape through the bends for better flow consistency.
- TIG-welded construction: Strong welds help reduce cracking and wear over repeated heat cycles.
- CNC-machined, chrome-plated flanges: Designed for better sealing, stronger connection points, and added corrosion resistance.
- Made for listed 350Z and G35 fitment: Fits 2003-2009 Nissan 350Z 3.5L and listed 2005 and 2007 Infiniti G35 applications when the exhaust layout matches.
Built for Better Flow and a Stronger VQ Sound
The factory exhaust path on the 350Z and G35 can feel restrictive once you start upgrading the rest of the car. This Flashark Y Pipe Downpipe Exhaust/Test Pipes kit helps exhaust gases move more smoothly through the front and mid exhaust area, reducing restriction and giving the car a more open tone.
Instead of making unrealistic power claims, this part should be viewed as one piece of a complete exhaust setup. Paired with a compatible catback, headers, intake, or tune, it can help the VQ35 feel more responsive and sound more alive without making the build overly complicated.
Stock Downpipe vs Flashark Y-Pipe Downpipe
The stock exhaust section on a 350Z or G35 is built for quiet daily use, factory comfort, and broad drivability. That works well for an untouched car, but it can start to feel restrictive when you want stronger sound and better exhaust response from the VQ35.
The Flashark Y Pipe Downpipe Exhaust/Test Pipes kit uses larger free-flow tubing, stainless steel construction, and a smoother exhaust path to help reduce restriction. The result is a deeper tone, cleaner exhaust movement, and estimated gains of 10-15 HP and 5-10 ft-lbs of torque when the rest of the setup supports it.
Built for the VQ35 Exhaust Layout
This Flashark Y Pipe Downpipe Exhaust/Test Pipes kit is made for the naturally aspirated VQ35 exhaust layout found on the 350Z and G35. It helps reduce restriction through the front and mid-exhaust area, giving the car a deeper tone, cleaner flow, and a sharper feel when you get back on the throttle.
For owners comparing a 350Z downpipe, 350Z Y-pipe, or 350Z test pipes upgrade, the main goal is simple: better exhaust movement, a stronger sound, and a more connected driving feel when the rest of the setup is properly matched.
What Is Included
- 1 x Y Pipe
- 3 x Gasket
- 6 x Screw
- 6 x Nut
You will get exactly what is shown in the product images. Before installation, inspect all gasket surfaces and check that the hardware matches your current exhaust connection points.
Delivery, Return, and Protection
DELIVERY: Free Shipping. Estimated in 3-5 Working Days.
Fast Shipping Policy: Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date.
Easy Return Policy: Every order comes with a 14-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days.
Worry-Free Delivery Protection: Add Worry-Free Delivery at checkout — if it's lost, stolen, or damaged, you're 100% covered.
Recommended Exhaust Pairings
Many 350Z and G35 owners upgrade the exhaust in stages, so keeping the current recommended-upgrade module is useful for both fitment comparison and conversion. This kit can be paired with a compatible 350Z catback exhaust for a fuller rear-section upgrade, or matched with VQ35DE exhaust headers on compatible 2003-2007 builds.
Fitment:
- 2003-2009 Nissan 350Z 3.5L
- 2005, 2007 Infiniti G35
Nissan 350Z and Infiniti G35 Y-Pipe Downpipe FAQs
Q1: Is this a 350Z downpipe, Y-pipe, or test pipe?
A1: This product is listed as a Y Pipe Downpipe Exhaust/Test Pipes kit for the 350Z and G35. On VQ35 exhaust setups, owners often use “downpipe,” “Y-pipe,” and “test pipes” together when comparing exhaust upgrades. The key point is that this kit is for a naturally aspirated exhaust layout, not a turbo downpipe application.
Q2: Will this fit my 2003-2009 Nissan 350Z?
A2: It is listed for 2003-2009 Nissan 350Z 3.5L models. Before ordering, compare the product photos with your current exhaust layout, especially if your car already has aftermarket headers, test pipes, or a catback exhaust.
Q3: Does this fit Infiniti G35 Coupe or Sedan?
A3: The listed G35 fitment is 2005 and 2007 Infiniti G35 3.5L. Because G35 exhaust routing can vary by body style and drivetrain, confirm Coupe/Sedan, RWD/AWD, and flange position before purchase.
Q4: Does this work with VQ35DE and VQ35HR engines?
A4: The 2003-2009 350Z range includes both VQ35DE and VQ35HR applications. Engine code matters, but exhaust layout matters too, so always confirm the connection points before installation.
Q5: How much horsepower will it add?
A5: Estimated gains are about 10-15 HP and 5-10 ft-lbs of torque. Actual results depend on your catback, headers, test pipes, intake, tune, engine condition, and whether the exhaust seals properly after installation.
Q6: Do I need a tune after installing this kit?
A6: A tune is not always required for this part alone. However, if you combine it with headers, test pipes, intake upgrades, or a full exhaust setup, tuning can help improve drivability, fuel trims, and power delivery.
Q7: Will this cause a check engine light?
A7: CEL behavior depends on the full exhaust setup and sensor condition. This part alone is less likely to cause a CEL than catless front test pipes, but exhaust leaks, bad O2 sensors, removed catalysts, or other modifications can trigger a warning light.
Q8: Is this street legal or emissions compliant?
A8: Do not assume it is street legal or emissions compliant in your area. Check local regulations before installing any performance exhaust component, especially if your car needs to pass inspection or emissions testing.
Q9: Will it make my 350Z or G35 louder?
A9: Yes, it can make the exhaust tone deeper and more aggressive. The final volume depends on your catback, front exhaust setup, resonators, catalytic converters, and whether other exhaust parts have been changed.
Q10: Will it create rasp or drone?
A10: Rasp and drone depend on the whole exhaust system, not only this part. Non-resonated catbacks, catless test pipes, headers, or very loud rear sections can increase rasp and cabin drone.
Q11: Will I smell exhaust after installation?
A11: A properly sealed Y-pipe/downpipe/test pipe setup should not smell like an exhaust leak. Strong exhaust smell usually comes from flange leaks, old gaskets, loose hardware, or catless exhaust parts installed upstream.
Q12: Can I use this with my stock catback exhaust?
A12: It may work with a compatible stock-style rear exhaust, but you should compare flange position and pipe routing first. If your car has an aftermarket catback, test-fit the system before fully tightening the hardware.
Q13: Are gaskets and hardware included?
A13: Yes. The package includes 1 Y pipe, 3 gaskets, 6 screws, and 6 nuts. Inspect all parts before installation and avoid reusing old crushed gaskets if they can cause leaks.
Q14: Is this difficult to install at home?
A14: A skilled DIY installer can handle it with proper tools, jack stands, and exhaust experience. If the car has rusty bolts, low ride height, welded exhaust sections, or mixed-brand parts, a professional shop is the safer option.
Q15: Who should not buy this exhaust kit?
A15: This kit is not the best choice if you need a quiet OEM replacement, a guaranteed emissions-compliant part, a catted or resonated front pipe, or a true turbo downpipe. It is better for owners who understand the fitment, sound, installation, and legal tradeoffs of performance exhaust upgrades.