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Invidia Q300 Cat Back Exhaust - Subaru STI Hatchback 2008-2014 / WRX Hatchback 2011-2014

Manufacturer Part # HS08STIG3S


MSRP: $1,378.00

In stock! Ships same day
Qualifies for free shipping!

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Invidia Turbo-Back Exhaust System 11-14 WRX/STi Hatchback ( Part Number:INV TBS11-14HTH)
Invidia Turbo-Back Exhaust System 11-14 WRX/STi Hatchback
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If you are looking for a great way to squeeze a little extra performance from your vehicle, then you will be pleased with the Invidia Q300 Cat Back Exhaust System. There are several performance attributes that makes this an excellent upgrade. This exhaust system has been made from 304 stainless steel and features 76MM piping. The exhaust has also been designed with minimal bends to reduce the amount of turbulence during acceleration, allowing the engine to exhale the exhaust gasses with less restrictions. This means you will have improvements in throttle response, along with increases in both horsepower and torque. 

This exhaust will come with quad polished tips, and the exhaust hangers are welded onto the stock location of the pipes so you don't have to perform further modifications.

New gaskets and hardware, will be included to make this exhaust system ready for installation.


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Brand: Invidia
Exhaust Orientation: Straight Exit
Installation Hardware Included: Yes
Piping Coating: No
Piping Flex Joint: Yes
Piping ID: 76mm
Piping Material: 304 Stainless Steel
Piping Taper: No
Silencer Included: No
Tip Material: Stainless Steel
Tip Qty: 4
Tip Shape: Round
Tip Size: 101mm

Mfgr. Warranty: 1 Year
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



Verified Purchase

Sounds great
Smileypie 3 months ago
My buddy helped me install this the other weekend and it went on quickly (helps if you have the hanger removal tool) and sounds amazing. Not too loud with a nice deep rumble to it.

wrx in rut
misterears 9 months ago
If you want a rich deep 1500-3000 RPM bass tone (tapering off gradually and getting more baritone to red line), this is your exhaust system. Easily the least bright and least "tin can" edgy system I have heard. If you want that ricer fart can sound, this is NOT for you. I added a CAI, got a tune and my stock 265hp 2013 went to 320bhp on CA 91 octane! It really kicked up the wimpy stock sheetmetal tipped look of my hatchback. The car almost looks lowered now and properly balanced visually...impressive. Tips were perfectly symmetrical and installer made sure they were perfectly centered on the bumper cutouts. Polished piping, muffler and tips is great too. Took me a week to get well accustomed to the dramatic transformation in sound. Its bellowing like a bull in rut has become a good friend.

Verified Purchase

Great choice if you're on the fence.
joepom91 9 months ago
I bought this a year ago during the Labor Day sale. I had a completely stock 2012 WRX hatch, and was unsure how much rumble I wanted. I didn't want a lot of drone since this my car is my daily driver. But, since we're paying for nearly $1k for a catback, I definitely wanted some rumble. There was a decent amount of drone at first, but it went away after a 500 miles or so. Also, the seats put up in the back helps with drone a little bit too. I also had to buy the Grimmspeed adapter if you have a stock downpipe, But overall, this exhaust has great build quality and great sound. Just enough rumble and people can hear you coming down the street still. My dog hears my car and is waiting before I even pull up the driveway. Plus, quad tip exhaust on a hatch?! Who does that? Subaru does it.
Verified Purchase

Invidia Q300 Cat Back Exhaust
TJB1013 2 years ago
Exhaust arrived 2 days after ordering. Install was very easy, about 30 min. with all hardware included. Great fit and finish. Perfect sound! Not too loud and no highway drone if installed correctly.
Verified Purchase

Great Exhaust!!
findtheline00124497 3 years ago
This exhaust looks and sounds great! Even after a tough South Dakota winter the Tips polished up very nicely and the muffler still has that nice mirror finish. Great product, would highly recommend to hatchback owners looking to get the full effect of the sound of a boxer engine. This one is not aggressively loud, it sounds great for a daily driver.

  • Q: Muffler tip  Acuradrv 1 year ago


    Will changing the tip require cutting and welding?

    • A: Yes, The Q300 does not have removable exhaust tips.

      Luis L. 1 year ago
  • Q: Gaskets  raulb5006107 3 years ago


    I have a 2014 wrx hatchback. What gasket should I use when installing this catback to my stock downpipe?

    • A: Using the donut gasket and Grimmspeed's OEM downpipe to 3 catback gasket would be the best fit and finish.

      Nick S. 3 years ago
  • Q: Will it fit?  coloRADo 4 years ago


    I have an 09 hatch. I know this won't fit unless I do modifications to the rear diffuser. Do you know if any other modifications will be needed?

    • A: We have not tried to install this on a 2009 model and we do not know what modifications would be required to make it fit.

      Zach G. 4 years ago
  • Q: '14 WRX hatchback  sf89 4 years ago


    Will this exhaust fit a 2014 WRX hatchback without huge modifications?

    • A: This exhaust will be a direct fit for the 2014 WRX hatchback and no modification is necessary.

      Zach G. 4 years ago
  • Q: ACCESSPORT V3  rayman 4 years ago


    Will I need a pro tune since this issnt a cobb product or will stage 2 catted downpipe tune also work for this exhaust?

    • A: Tuning is not required for Catback Exhausts. And as long as you have the Catted Downpipe and this exhaust you can flash over to Stage 2 using your AccessPort.

      Brady R. 4 years ago