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Invidia Q300 Cat Back Exhaust Titanium Tips - Subaru WRX/STI 2015+

Manufacturer Part # HS15STIG3T


MSRP: $1,467.00

In stock! Ships same day
Qualifies for free shipping!

Buy as a package deal and save:
Stage 1 Performance Package 15+ STI ( Part Number:RSD S1-SUB-004-1)
Stage 1 Performance Package 15+ STI
As low as $1,660.66
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The Invidia Q300 Cat Back Exhaust System is one of the more popular exhaust systems due to the performance, and price. This exhaust features high quality SUS304 fabrication with CNC-machined flanges, and manufactured with a high polished finish. This exhaust also features mandrel-bent stainless steel piping for maximum exhaust flow, and reduced back pressure. 

Please note that Kartboy standard exhaust hangers will not work with this exhaust.

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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: Titanium
Tip Qty: 4
Tip Shape: Round
Tip Size: 110mm

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.



Looks good, but quiet
kej4312 1 month ago
Wish i did more research before purchasing this. nice little exhaust if you're looking for a little rumble but nothing crazy. wish it was louder. Q stands for Quiet.


Decent product, but hiccups after 2 years of ownership
Alex 4 months ago
I've owned the catback system for over two years on my 2015 forester XT. Fitting was made to the rear bumper in order for the tips to fit. Looks badass, sounds pretty good even though a little loud when going uphill, but nothing unbeareable. Shipping was good. The product would've had 5 stars everywhere if it were not for a piece of 12 foot fiberglass coming out of the exhaust tips.. I had to pull out most of the fiberglass as the tips were stuffed with it. It's quite an unpleasant experience when you spend 1K on a catback, you expect it to be of quality. Perhaps, someone could have a solution?


Edison Chan 8 months ago
"It's fxxking lit!" --Thomas Edison

Verified Purchase

16 STI
Flowerbomb 8 months ago
Bought this for a 2016 Subaru STI. Super easy install. Has a nice mellow deep sound; not loud or overwhelming. Packaging box sure did take a beating, but nothing damage. Overall happy with the product. =]
Verified Purchase

Looks beautiful, but super quiet
Disillusions 1 year ago
As many have said, this cat-back is incredibly quiet. So much so, that if you didn't know it was on, you'd swear it was stock. When idling, the sound is very deep; but, get on the throttle and it doesn't go much beyond that. Personally, I can barely hear it when I'm driving; but, I know that will change with the addition of a downpipe. So, if a loud exhaust is what you're after, then this is likely not the setup for you. With that being said, it's perfect for people who are worried about attracting attention, or waking their neighbors. The fitment was perfect, and it looks absolutely incredible on the car. I'd definitely recommend it to anybody looking to buy an exhaust for their 15+.


  • Q: Invidia Q300  Jaycee 8 days ago


    What sizes are the bolts for this exhaust 'diameter/height? how many are required? what size is the hex? i bought one from a friend and he gave me it without the hardware.

    • A: We don't have that specific information. For any further questions please call our support team at 801-748-4910.

      Luis L. 6 days ago
  • Q: Invidia Q300 Exhaust  David 7 months ago


    Does the Invidia Q300 Cat Back connect straight to the Invidia Catless Downpipe for the 2015 WRX or do I need to purchase another part?

    • A: This exhaust is designed to mate up with a 3 inch down pipe on the 15+ WRX.

      Jared A. 7 months ago
  • Q: Installation  Edison Chan 9 months ago


    does this item included everything I need for installation? Any additional items I should purchase at the same time?

    • A: This will include everything to install unless you are pairing with an OEM down pipe an adapter will be required.

      Jared A. 9 months ago
  • Q: Invidia titanium cat back exhaust   Hiram23 10 months ago


    I have a 2016 subaru wrx sti, what else would I Need to order if I get the invidia q300 titanium tip catback exhaust? (adapters etc) and will I need to tune my car after the install? Also I live Montreal Québec Canada will there be extra charges once it arrives at my house? thanks Peter

    • A: You will need an adapter to have it mate to the OEM down pipe and no tune is required for any catback exhaust. There could be additional fees for packages going internationally.

      Chris W. 10 months ago
  • Q: Fitment WRX 2.0 15-Up Automatic  RafaStreetSolutions 1 year ago


    Does it fits the 15/16 WRX 2.0 Automatic (CVT)?

    • A: Yes this is confirmed to fit the 2015-2016 WRX.

      Chris W. 1 year ago