Frequently Bought Together
Flashark Downpipe Exhaust/Test Pipes for 2008-2018 Nissan 370z Infiniti G37 Z34
The FLASHARK Test Pipes/Downpipe is a versatile performance upgrade designed for both the Nissan 370Z (2009-2018) and the Infiniti G37 (2008-2013). Combining the functionality of test pipes and downpipes, this product enhances exhaust flow, boosts horsepower, and delivers a powerful exhaust note. Perfectly tailored for high-performance enthusiasts, it ensures compatibility with both models while providing exceptional durability and performance gains.
Specifications:
- Brand: FLASHARK
- Certificate: ISO9001:2000
- Application: Exhaust Downpipe / Test Pipes
- Material: Heavy-duty 16-gauge T-304 Stainless Steel
- Surface: Mirror Polish
- Model: DP29773
- Inlet / Outlet Diameter: 2.50" for maximum flow
Package Included:
No need to search for extra parts. We include the essential hardware for a secure, leak-free installation:
- 2 x Stainless Steel Test Pipes
- Premium Exhaust Gaskets Included
- All Necessary Installation Bolts
(You will receive exactly what is shown in the picture below)
Features & Performance Gains:
Unlike standard OEM replacements, our test pipes 370Z and G37 kits are engineered to outperform the competition:
- Maximize Engine Output: Free up trapped horsepower and gain significant low-end torque.
- Unrestricted Flow Design: Large 2.50" diameter, free-flow tubing makes the exhaust airflow incredibly smooth, specifically designed for high-performance track racing.
- Superior Construction: Crafted from high-quality 16-gauge T-304 stainless steel utilizing computerized mandrel-bends to prevent exhaust turbulence.
- TIG Welded Joints: All joints are professionally TIG welded for maximum strength, preventing cracking under extreme heat and vibration.
- CNC Machined Flanges: Thick, CNC-machined flanges provide maximum durability and a perfectly flat mounting surface to prevent leaks. Chrome-plated for corrosion resistance.
🚚 Delivery & Warranty:
Shipping: Free Shipping (Estimated delivery in 3-5 Working Days)
Warranty: Permanent Warranty for complete peace of mind on the road or track.
Flashark's all-in-one kits
Often, after purchasing the 2008-2018 Nissan 370z Infiniti G37 Z34 Downpipe Exhaust, customers will also purchase other items. Come on, check out Flashark's all-in-one kits and modify your car to your heart's content!
Downpipe & Test Pipes vs. OEM Catalytic Converters
When searching for true power, it's essential to understand how Flashark's system compares to stock components:
- OEM Catalytic Converters: Factory emissions components restrict exhaust flow, trapping gases, increasing backpressure, and ultimately stifling engine response and sound.
- Flashark Downpipe & Test Pipes: By removing these restrictive barriers, our pipes provide a direct, smooth path for exhaust gases. This setup drastically reduces backpressure, increases engine efficiency, and awakens the VQ37VHR engine.
Downpipes and Test Pipes: Nissan 370z Infiniti G37
Downpipes and test pipes serve distinct but complementary roles in a high-performance exhaust system:
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Downpipes: Connect directly to the exhaust manifold or turbo flange, guiding exhaust gases efficiently while maintaining structural integrity and durability.
- Test Pipes: Replace the restrictive factory catalytic converters entirely, allowing exhaust gases to flow freely for maximum horsepower, torque, and engine efficiency.
Flashark Downpipe/Test Pipe: Combining the Best of Both Worlds
Flashark's product perfectly combines the advantages of both exhaust pipes and test pipes, providing a powerful upgrade solution for Nissan 370Z and Infiniti G37 owners:
- Replaces Factory Downpipe → Removes the restrictive catalytic converters, allowing exhaust gases to flow freely for improved performance.
- Boosts Horsepower and Torque → Enhances overall engine output for the 2008-2018 Nissan 370Z and 2008-2013 Infiniti G37.
- Reduces Maintenance Risk → Eliminates catalytic converters, lowering the chance of clogging or failure over time.
- Durable Construction → Made from high-quality stainless steel with precise mandrel bends and TIG-welded joints to withstand high-performance conditions.
Nissan 370Z and Infiniti G37 Overview
- Nissan 370Z (2009-2018): The Nissan 370Z is a high-performance sports car that continues the legacy of the iconic Z series. Since its release in 2009, the 370Z has been celebrated for its precise handling, powerful 3.7L V6 engine, and aggressive styling. Whether on the track or during daily driving, the 370Z delivers an exceptional driving experience that enthusiasts have come to love.
- Infiniti G37 (2008-2013): The Infiniti G37 is a luxury sports sedan that combines high-performance with premium comfort. Powered by a 3.7L V6 engine, the G37 offers a balanced blend of power and refinement. Its stylish design and exceptional handling make it a standout in its class, perfect for those who want both luxury and sportiness in a single package.
Why Choose Flashark Downpipes/Test Pipes?
If you're looking for the best test pipes for 370Z and G37 models, Flashark offers unbeatable value. We prioritize premium materials like T-304 stainless steel and precise CNC machining to ensure a seamless fit for your Coupe, Sedan, or G37x. Enjoy enhanced horsepower, an aggressive exhaust tone, easy bolt-on installation, and the backing of our permanent warranty.
Frequently Asked Questions (FAQ)
Q1: Do these downpipes fit the AWD Infiniti G37x?
A1: Yes, our downpipes are a direct fit for the 2008-2013 Infiniti G37, including the all-wheel-drive (AWD) G37x models, as well as the Coupe and Sedan.
Q2: What years of the Nissan 370Z are these test pipes compatible with?
A2: These test pipes are designed for the 2009-2018 Nissan 370Z (Z34 chassis). They act as a perfect bolt-on replacement for your restrictive factory catalytic converters.
Q3: How much horsepower will I gain with 370Z test pipes?
A3: While exact numbers vary based on your other modifications and tuning, replacing your OEM catalytic converters with our free-flowing 370Z test pipes significantly reduces exhaust backpressure. This allows your VQ37VHR engine to maximize horsepower and low-end torque.
Q4: Are the exhaust gaskets included with the downpipes?
A4: Yes! We want your installation to be as smooth as possible. The package includes two premium exhaust gaskets and all necessary installation bolts for a secure, leak-free fit.
Q5: Will these test pipes make my G37 or 370Z louder?
A5: Absolutely. By removing the restrictive factory catalytic converters, these test pipes will give your Nissan 370Z or Infiniti G37 a much deeper, louder, and more aggressive exhaust note.
Q6: What material are the Flashark test pipes made from?
A6: They are crafted from high-quality 16-gauge T-304 stainless steel. All joints are professionally TIG-welded, and the flanges are CNC-machined to ensure maximum strength, durability, and corrosion resistance against harsh track conditions.
Q7: Will installing test pipes trigger a Check Engine Light (CEL)?
A7: Because test pipes remove the factory catalytic converters, they may trigger a Check Engine Light (CEL) related to oxygen sensor readings. Many performance enthusiasts use O2 sensor spacers or a custom ECU tune to resolve this issue for track use.
Q8: Is welding required to install these downpipes?
A8: No welding is required. Our G37 and 370Z test pipes feature a direct bolt-on design that perfectly replaces the factory exhaust components. However, professional installation is always recommended for the best results.
Q9: Does this kit fit the Infiniti Q50 or Q60?
A9: Yes, this downpipe kit fits all Infiniti Q50 and Q60 models equipped with the 3.7L VQ37VHR engine. Please note that it does not fit the 2.0T or 3.0T engine variants.
Q10: Are these test pipes street-legal?
A10: Flashark test pipes completely eliminate the catalytic converters and are designed strictly for off-road, racing, and track use only. They are not legal for use on public highways or street driving in areas with emissions regulations.
Q11: What kind of warranty does Flashark offer on these downpipes?
A11: We stand behind the quality of our performance parts. Flashark offers a Permanent Warranty on these test pipes, giving you complete peace of mind on the road or track.
FITMENT & COMPATIBILITY
✅ Fits:
• 2009-2018 Nissan 370Z (Z34) — 3.7L V6 VQ37VHR
• 2008-2013 Infiniti G37 Coupe & Sedan — 3.7L V6 VQ37VHR
• 2008-2013 Infiniti G37x (AWD) — 3.7L V6 VQ37VHR
• 2014-2015 Infiniti Q50 — 3.7L V6 VQ37VHR
• 2014-2015 Infiniti Q60 — 3.7L V6 VQ37VHR
❌ Does NOT fit:
• 2003-2006 Nissan 350Z (VQ35DE — different engine block)
• 2019+ Nissan Z (PR50 — VQ37 discontinued)
• Infiniti Q50/Q60 2.0T or 3.0T (wrong engine)
WHAT'S IN THE BOX
• 1x Front Downpipe (3-bolt flange to turbine)
• 1x Test Pipe (connects to mid-pipe)
• 4x High-Temp Exhaust Gaskets (2x 3-bolt + 2x 2-bolt)
• 10x Installation Bolts (as shown in photos)
• O2 sensor bungs pre-welded
THE VQ37VHR'S WEAKEST LINK
The 3.7L V6 in your 370Z/G37 is a proven platform — but the factory catalytic converters are its biggest performance bottleneck. Removing them = less backpressure = faster turbo spool = stronger mid-range = more power everywhere. Whether you're chasing lap times or building a weekend show car, a downpipe + test pipe combo is the single most impactful first step on the VQ37 platform.
WITHOUT A TUNE
• Noticeable throttle improvement
• Lighter, more aggressive exhaust note
• Check Engine Light likely → Fix: O2 sensor extensions or defoulers ($20)
WITH A TUNE (Recommended)
• Full access to the VQ37's real potential
• Stronger pull from 3,000 RPM all the way to redline
• That unmistakable VQ37 V6 sound
• Recommended tuners: UpRev, ECUTek, HKS F-CON
⚠️ Check our High-Flow Cat option if you need a street-legal alternative — link in our shop.
A11: We stand behind the quality of our performance parts. Flashark offers a Permanent Warranty on these test pipes, giving you complete peace of mind on the road or track.
Package Included:
We provide everything you need for a 100% bolt-on experience. No extra trips to the hardware store required.
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2x Performance Downpipes: High-flow stainless steel with pre-welded O2 sensor bungs.
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4x High-Temp Flange Gaskets:
- 2x Heavy-duty 3-bolt gaskets.
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2x Precision-fit 2-bolt gaskets.
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10x Pieces of Professional Hardware:
(You will get exactly as shown in the picture above)