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Item #:
328103
Invidia (HS15STIG3T) Q300 Rolled Titanium Quad Tip Cat-Back Exhaust System for Subaru WRX/STI
Item #:
328103
XCD 4632
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The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater horsepower, torque gains and a rich, deep, sporty sound.
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What Stands Out
Premium Materials
Constructed from high-quality titanium, this exhaust system reduces weight while enhancing durability, ensuring a long-lasting performance upgrade for your Subaru WRX/STI.
Enhanced Sound
The quad tip design offers a deep, aggressive exhaust note that enhances the driving experience, making your Subaru stand out on the road and adding to its sporty character.
Easy Installation
Engineered for a direct fit, this cat-back exhaust system can be easily installed without any modifications, providing a hassle-free upgrade for Subaru enthusiasts looking for performance and style.
Product Details
| Brand Name | Invidia |
| Manufacturer Part Number | HS15STIG3T |
| Manufacturer | Invidia |
| UPC | 608067671319 |
| OEM Equivalent Part Number | HS15STIG3T |
| Model Number | HS15STIG3T |
| Item Weight | 47 Pounds (21.32 kg) |
| Compatible with Vehicle Type | Car |
| Installation Type | Bolt-On |
| Color | Titanium |
| Shape | Round |
| Material Type | Stainless Steel |
| Brand | Invidia |
| Material | Stainless Steel |
| Vehicle Service Type | Car |
Product Description
Invidia (HS15STIG3T) Q300 Rolled Titanium Quad Tip Cat-Back Exhaust System for Subaru WRX/STI
About This Item
Upgrade your Subaru WRXSTI's performance and style with the Invidia HS15STIG3T Q300 Rolled Titanium Quad Tip Cat-Back Exhaust System. This high-quality exhaust system is specifically designed for the Subaru WRXSTI, ensuring a perfect fit and maximum performance. Constructed from durable titanium, the Invidia HS15STIG3T Q300 exhaust system is built to withstand the harshest conditions and provide long-lasting performance. The quad-tip design adds a sporty and aggressive look to your vehicle, making it stand out from the crowd. But it's not just about looks - the Invidia HS15STIG3T Q300 exhaust system also delivers enhanced power and sound.
With its optimized design, this cat-back exhaust system improves exhaust flow, resulting in increased horsepower and torque. You'll experience quicker throttle response and a more exhilarating driving experience. Not only does the Invidia HS15STIG3T Q300 exhaust system deliver impressive performance, but it is also engineered to meet strict emissions standards. This means you can enjoy the benefits of a high-performance exhaust system without compromising on environmental responsibility. Easy to install and fully compatible with your Subaru WRXSTI, the Invidia HS15STIG3T Q300 Rolled Titanium Quad Tip Cat-Back Exhaust System is a must-have upgrade for any performance enthusiast.
So why wait? Take your Subaru WRXSTI to the next level and turn heads wherever you go with this premium exhaust system. Note: This product is specifically designed for the Subaru WRXSTI. Please ensure compatibility before making your purchase.
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Customer Questions & Answers
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Question:
What is the Invidia HS15STIG3T Q300 Cat-Back Exhaust System made of?
Answer: The Invidia HS15STIG3T Q300 Cat-Back Exhaust System is constructed from high-quality 2.5-inch mandrel-bent stainless steel, which enhances durability and corrosion resistance. The system features a rolled titanium quad tip finish that not only looks sleek but also provides a lightweight option compared to traditional materials. This construction is ideal for automotive enthusiasts who want to reduce weight without sacrificing strength. -
Question:
What are the benefits of installing a cat-back exhaust system like the Invidia Q300?
Answer: Installing a cat-back exhaust system like the Invidia Q300 can significantly improve your vehicle's overall performance, providing enhanced horsepower and torque. It optimizes exhaust flow to promote better engine efficiency, which translates to improved throttle response. Additionally, the unique sound profile of the Q300 system produces a deep, aggressive exhaust note, making it a popular choice among Subaru WRX STI owners looking for both performance upgrades and an exhilarating driving experience. -
Question:
Will the Invidia Q300 Cat-Back Exhaust System fit my Subaru WRX STI?
Answer: The Invidia Q300 Cat-Back Exhaust System is specifically designed for Subaru WRX STI models, ensuring a proper fit and seamless installation. It is engineered to replace the factory exhaust system while maintaining compatibility with essential mounting points and hangers. This tailored design guarantees that you won't have to make extensive modifications, enabling you to enjoy the superior benefits with a straightforward installation process that fits correctly right out of the box. -
Question:
How does the sound of the Invidia HS15STIG3T Q300 compare to stock exhaust systems?
Answer: The sound produced by the Invidia HS15STIG3T Q300 Cat-Back Exhaust System is notably louder and more aggressive compared to stock exhaust systems. This upgrade offers a refined tone that enhances the driving experience without being overly intrusive. The engine note emphasizes performance, making it ideal for driving enthusiasts who appreciate a sporty feel and rich sound quality while also enjoying everyday usability. -
Question:
Is the Invidia Q300 Cat-Back Exhaust System street legal?
Answer: Yes, the Invidia Q300 Cat-Back Exhaust System is designed to be street legal in many regions, as it adheres to noise regulations. However, legality may vary depending on your specific location and local emissions laws. It's recommended to check your local regulations to ensure compliance if you're considering performance modifications. This allows you to enjoy the enhanced performance and sound while remaining within the law for everyday driving. -
Question:
What tools are required to install the Invidia HS15STIG3T Q300 Cat-Back Exhaust?
Answer: To install the Invidia HS15STIG3T Q300 Cat-Back Exhaust System, you will typically need basic hand tools including a socket set, a torque wrench, and possibly a saw or cutting tool if you're removing the stock system. Having access to a lift or jack stands can make the installation process smoother. It's advisable to follow the provided installation instructions closely, ensuring a secure and proper fit for optimal performance. -
Question:
Does the Invidia Q300 Cat-Back Exhaust System require any tuning of the ECU?
Answer: While the Invidia Q300 Cat-Back Exhaust System can improve performance, it does not necessarily require ECU tuning to benefit from its installation. Most users will experience enhanced performance simply by adding the exhaust system. However, for those looking to maximize power gains, especially when combined with other modifications, tuning can further optimize engine performance and ensure that the vehicle runs smoothly with the new exhaust setup. -
Question:
Can the Invidia Q300 exhaust system improve fuel efficiency?
Answer: Many Subaru WRX STI enthusiasts report slight improvements in fuel efficiency after installing performance exhaust systems like the Invidia Q300. The enhanced exhaust flow and reduced backpressure can contribute to more efficient combustion, potentially improving mileage under certain driving conditions. However, performance upgrades often lead to a more spirited driving style, so results may vary depending on driving habits. -
Question:
What maintenance is required for the Invidia HS15STIG3T Q300 Cat-Back Exhaust System?
Answer: Maintaining the Invidia HS15STIG3T Q300 Cat-Back Exhaust System mainly involves periodic inspections for any signs of wear or damage. Regularly checking mounting clamps and hangers for secure attachments can prevent rattling or misalignment. Cleaning the tips and the exhaust surface can help maintain its appearance, while ensuring the longevity of the system. This simple maintenance will help preserve the exhaust's performance and aesthetic appeal. -
Question:
Where can I buy the Invidia HS15STIG3T Q300 Rolled Titanium Quad Tip Cat-Back Exhaust System for Subaru WRX STI?
Answer: You can purchase the Invidia HS15STIG3T Q300 Rolled Titanium Quad Tip Cat-Back Exhaust System for Subaru WRX STI on Ubuy in Saint Lucia. Ubuy offers a wide selection of automotive performance parts including this exhaust system, making it a convenient choice for those looking to elevate their vehicle's performance. Additionally, Ubuy provides a trusted platform for purchasing quality aftermarket upgrades, ensuring customer satisfaction.
Invidia Cat-Back Systems HS15STIG3T Editorial Review
**** The Invidia exhaust system has garnered a positive reception among Subaru enthusiasts, especially for those seeking an upgrade from stock without overwhelming loudness. Many users noted that the system strikes an ideal balance—it offers a deeper and more aggressive sound when accelerating, while remaining quietly refined during idle and highway cruising. Customers particularly appreciate the craftsmanship behind the exhaust, highlighting both the aesthetic appeal of its quad tips with a burnt finish and the solid material quality. The installation process is frequently noted as straightforward, with many reporting it can be completed in under two hours with common tools and a helping hand. Those who had previously experienced drone from louder exhausts were pleasantly surprised to find that this model minimizes annoying vibrations while driving at higher speeds, allowing for an enjoyable driving experience without sacrificing the signature Subaru growl. Overall, the feedback indicates that this exhaust system resonates well with customers, providing a satisfying auditory upgrade without compromising on daily drivability. **
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Pros
- Deeper, more aggressive sound when accelerating
- Quiet at idle and highway speeds
- High-quality materials and craftsmanship
- Beautiful appearance with well-designed quad tips
- Easy installation process
- Minimal drone during cruising
Cons
- Some may find it still slightly loud at highway speeds
Platform Trust & Buyer Confidence
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
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XCD 4632
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Features & Benefits
- Flat bottom shaped muffler design improves high speed aerodynamic performance
- Improves horsepower and torque gains
- Using Advantex material optimized back pressure for improved free-flow exhaust
- Made with high-quality SUS304 stainless steel, CNC-machined flanges, and Robot TIG welding
- Double wall polished Stainless Steel or Titanium tips for both appearance and durability
- Fits 2015-Up Subaru WRX/STI 4 Door
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