INVIDIA HS15SW4GTP Single Exit Exhaust N1

( Brand: Invidia ), ( Part Type: Exit Exhaust ), ( Manufacturer Part Number: HS15SW4GTP ), ( Carb Acknowledgement Required: True ), ( Air Freight Prohibited: False )

Review INVIDIA N1 Single Exit Exhaust And fits WRX STI 2015–2021

The Invidia HS15SW4GTP N1 Single Exit Exhaust System for the Subaru WRX STI model years 2015 to 2021 is an exceptional upgrade for those seeking enhanced performance and a more captivating exhaust note. This system is manufactured by Invidia, a renowned name in the automotive aftermarket industry, known for its commitment to producing high-quality, race-proven exhaust components.

The HS15SW4GTP N1 Single Exit Exhaust System is designed as a direct replacement for the stock exhaust system. It features a single, high-performance muffler that delivers a thorough and uninterrupted exhaust flow. This design not only results in a more powerful exhaust note but also optimizes backpressure for improved engine performance.

The system is constructed primarily from SUS304 Stainless Steel. This material is highly resistant to rust and corrosion, ensuring durability and longevity. The polished finish not only adds an aesthetic appeal but also protects the exhaust from the elements.

The Invidia HS15SW4GTP N1 Single Exit Exhaust System utilizes a 76mm (3.0 inches) diameter piping throughout, which is larger than the stock diameter. This increases exhaust flow and reduces backpressure, contributing to improved engine performance. The system is also designed with a straight-through design, allowing for unrestricted exhaust gases to exit the vehicle.

One of the most notable features of this exhaust system is its compatibility with the Subaru Vehicle Dynamics Control (VDC) system. This allows for seamless integration with the vehicle's stability control system, ensuring optimal performance and safety.

The Invidia HS15SW4GTP N1 Single Exit Exhaust System for the Subaru WRX STI is a well-engineered upgrade that not only provides performance benefits but also adds a distinct and aggressive exhaust note. This system is a must-have for those looking to enhance the driving experience of their vehicle.

Invidia HS15SW4GTP N1 Single Exit Exhaust for 15-21 WRX STI: A Detailed Analysis

The Invidia HS15SW4GTP N1 Single Exit Exhaust is a popular aftermarket exhaust system for the 15-21 WRX STI. This system is known for its performance benefits and distinctive look. In this analysis, we will discuss the pros and cons of investing in this exhaust system to help you make an informed decision.

1. Enhanced Power: The Invidia HS15SW4GTP N1 Single Exit Exhaust system can help improve your WRX STI's power output. This is due to its larger diameter exhaust piping and the reduction in backpressure, allowing for better flow of exhaust gases.

2. Improved Sound: This exhaust system offers a more aggressive and deeper exhaust note. The single exit design amplifies the sound, adding to the overall driving experience.

3. Weight Reduction: The Invidia HS15SW4GTP N1 Single Exit Exhaust is lighter than the stock system, contributing to a slight weight reduction. This can lead to improved handling and acceleration.

4. Aesthetics: The single exit exhaust design not only sounds great but also looks impressive. It gives the WRX STI a more aggressive and sporty appearance.

1. Cost: The Invidia HS15SW4GTP N1 Single Exit Exhaust is a premium aftermarket exhaust system, and its price reflects that. It may be a significant investment for some.

2. Loudness: The exhaust system can be quite loud, especially when accelerating or revving the engine. This may not be desirable for those who prefer a quieter ride.

3. Maintenance: The Invidia HS15SW4GTP N1 Single Exit Exhaust requires regular maintenance. The catalytic converter is not included in the kit, so you will need to purchase and install a high-performance catalytic converter if you want to pass emissions inspections.

4. Complex Installation: Installing the Invidia HS15SW4GTP N1 Single Exit Exhaust can be a complex process. It may require professional assistance to ensure proper installation and alignment.

The Invidia HS15SW4GTP N1 Single Exit Exhaust for the 15-21 WRX STI offers several performance benefits, including increased power, improved sound, weight reduction, and aesthetic appeal. However, it also comes with some drawbacks, such as cost, loudness, maintenance requirements, and complex installation.

If you're an enthusiast looking for a significant power upgrade, improved sound, and a more aggressive appearance, the Invidia HS15SW4GTP N1 Single Exit Exhaust might be a worthwhile investment. However, if you're on a budget or prefer a quieter, more discreet exhaust system, you may want to consider other options.

I would recommend the Invidia HS15SW4GTP N1 Single Exit Exhaust for WRX STI owners who are passionate about performance and aesthetics, and who are willing to invest in a premium aftermarket exhaust system. However, it's essential to carefully consider the cons and weigh them against the benefits before making a decision. If you're unsure or have any questions, consult a Subaru performance specialist or do further research to ensure this is the right choice for you.

part # hs15sw4gtp prices

• $750.00-$1079.95

specifications frazzlekits:

• for models: Wrx, Sti
• for years: 2015-2021
• brand: Invidia
• part type: Exit Exhaust
• manufacturer part number: HS15SW4GTP
• carb acknowledgement required: True
• air freight prohibited: False

general frazzlekits:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Exhaust System Kits

offer frazzlekits:

• availability: In Stock
• started: December 31, 2025
• quantity: 5
• sold: 0
• options: Ship-to-home

seller frazzlekits:

• # reviews: 52322
• rating: 99.7%

returns frazzlekits:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

payments frazzlekits:

• wallet: Apple-pay
• credit card: Discover
• other

shipping frazzlekits:

• class: Standard
• type: Fixed
• service: UPS Ground
• cost: $0.00
• carrier: UPS
• transit: 4-8 Days

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