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Invidia HS08SW4G3S Q300 Cat-Back Exhaust System Single Rolled Stainless Steel Tip

(2008-2013 Subaru Impreza; 2010-2011 Buick LaCrosse CXL; 1978-1981 Buick Century Estate Wagon; 2012 Buick Verano; 1984-1986 Buick Skyhawk T-Type)

Manufacturer

Picture for manufacturer Invidia

Part Number

HS08SW4G3S
11 reviews
Sale Price

$1,036.71

Estimated ship date Friday, November 27

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Product Details

The Invidia Q300 Cat-Back Exhaust System (HS08SW4G3S) is a premium performance exhaust engineered for enthusiasts who demand improved power, refined sound, and lasting durability. Featuring a flat-bottom muffler design, the Q300 reduces aerodynamic drag at speed while delivering an optimized, free-flowing exhaust path.

Inside the muffler, a continuous piping design paired with Advantex sound-absorbing material balances exhaust flow and back pressure — producing meaningful horsepower and torque gains alongside a deep, sporty exhaust note that complements performance driving without excessive drone.

Key Features:

  • SUS304 polished stainless steel construction throughout for long-term corrosion resistance
  • 3-inch (76mm) main piping diameter for maximum exhaust flow
  • Mandrel-bent tubing with smooth radius bends ensures an unobstructed flow path
  • CNC-machined flanges for precise, leak-free fitment
  • Robot TIG welding delivers consistent, high-strength welds
  • Single-exit design with a 4.33-inch (110mm) rolled polished stainless steel tip
  • Exhaust hangers welded at OEM locations for direct bolt-on installation
  • Includes new gaskets and all required hardware
  • Resonated design — silencer not included
  • Piping includes a flex joint for added durability
  • Supersedes part number: HS08SW4GS3

The Q300 is a direct-fit cat-back exhaust system designed to bolt on using factory hanger positions, making installation straightforward. The polished stainless steel finish provides a show-quality appearance right out of the box, while the system's construction is built to endure years of performance use.

Products specifications

Fits

2008-2013 Subaru Impreza; 2010-2011 Buick LaCrosse CXL; 1978-1981 Buick Century Estate Wagon; 2012 Buick Verano; 1984-1986 Buick Skyhawk T-Type

Piping

76mm

Tip

110mm

Tip Style

Rolled SS

great !

Quick and easy order

insufficient info presented. Before confirming payment needed to make sure part fit proper side. Info not provided had to call in waited ten minutes. Also when choosing paypal payment it wouldn't transfer. had to log off twice before final completion.

The application will work but I have to modify it slightly as the bolt circle in a little undersized for my application.

called for invo very helpful

Prices are great on this site. The layout and checkout process are easy to use; Google checkout is definitely a plus. Shipping could be a little faster, especially if they had drop ships from their supplies for items not currently in stock. Overall good service and no problems.

Good

well made website would give 5 stars if i could confirm fast shipping.

Best price I could find! Great customer service kept me informed through the whole order process to insure acuracy since it was being sent directly from the manufacture. Recieved my order in good time, right parts and no damage. Overall very satisfied and will be doing business again in the future.

I ordered an AEM intake from Autoplicity because they had the best prices but it was on backorder from AEM. Autoplicity emailed me to let me know right away and sent me a confirmation when it was back in stock. I'll be shopping here again!

Autoplicity has the best prices around

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