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Invidia Titanium Catback Exhaust - Subaru WRX/STI 2015+

Manufacturer Part # HS15SW4TRG


MSRP: $1,900.00

In stock! Ships same day
Qualifies for free shipping!


If you're in the market for both weight savings and added horsepower, then the Invidia Titanium Cat-Back Exhaust Systems really aim to please. This exhaust system has been designed with minimal bends to reduce the amount of exhaust turbulence during acceleration which allows the engine to exhale the exhaust gasses with fewer restrictions. This means you will have improvements in throttle response, along with increases in both horsepower and torque. 

This exhaust has been fabricated from titanium and features 80MM piping. Once installed you can enjoy the benefits of an aggressive exhaust note throughout the entire RPM range. The exhaust hangers are welded onto the OEM locations so you don't have to perform any further modifications to the body for fitment.

New gaskets, and will be provided to make this a direct bolt-on exhaust system. 

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Brand: Invidia
Exhaust Orientation: Angled Exit
Installation Hardware Included: Yes
Piping Coating: No
Piping Flex Joint: No
Piping ID: 80mm
Piping Material: Titanium
Piping Taper: No
Silencer Included: Yes
Tip Material: Titanium
Tip Qty: 1
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.


  • Q: Sound & weight  lupe_solis6546035 3 months ago


    How does this exhaust compare to the invidia race single exit sound wise ?Also how much does this titanium version weigh ?

    • A: This will be similar in sound to the N1, with slight differences in pitch due to it being titanium instead of stainless steel. Advertised shipping weight for this exhaust is 27.3 lbs.

      Marcus E. 29 days ago
  • Q: Sound & weight  lupe_solis6546035 3 months ago


    How much does this exhaust weigh for the 2015 sti ? I currently have the invidia N1 race single exit on my car how do this Compare is it louder or the same ?

    • A: This exhaust is going to be slightly louder than your Invidia N1 race and the shipping weight is a touch over 27LBS.

      Jared A. 29 days ago
  • Q: Cat-back system for 2016 Subaru Impreza Sport Premium Hatchback 2.0i  Louis 2 years ago


    I see that you have the cat back system for the Subaru Impreza, and I think it is only for the sedan model. Will that system fit the hatchback model? If so, do you only sell the pipe without the muffler? How much would it cost? Thank you. Kind regards Louis

    • A: We do not carry an exhaust for your car unfortunately. The Sedan and Hatchback exhausts are not interchangeable. We are not able to split up exhausts and would arrive as pictured on the product page.

      Josh P. 2 years ago
  • Q: Invidia titanium catback for 16 cvt wrx  16cvtrex 2 years ago


    Will this work with a 16 cvt wrx? I know the cvt models are more sensitive than the MT and want to be sure it's safe before buying. Also would it need a tune ? Thanks!

    • A: This will fit on your car just fine. It will not require a tune and should run smoothly.

      Josh P. 2 years ago
  • Q: Install  Barca1408 2 years ago


    I was wondering if you could put it on a 15/16 sti and make a sound clip please? Curious on how it sounds item looks sweet!

    • A: It is possible a video may be coming, but we have no immediate plans to test.

      Brady R 2 years ago