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Invidia N1 Cat Back Exhaust ( Part Number:INV HS15STIGTP)

Invidia N1 Cat Back Exhaust - Subaru WRX/STI 2015+

Manufacturer Part # HS15STIGTP


MSRP: $1,007.00

In stock! Ships same day
Qualifies for free shipping!

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Turbo-Back Exhaust Stainless Steel Tip System ( Part Number:RSD SSTBSSUBWRX)
Turbo-Back Exhaust Stainless Steel Tip System - Subaru WRX 2015+
As low as $1,325.53
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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 N1 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 fewer restrictions. This means you will have improvements in throttle response, along with increases in both horsepower and torque. 

This exhaust will come with a beautiful pair of polished tips on premium mufflers, 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 come with this exhaust system to make it ready for the installation. 

Kartboy standard exhaust hangers will not work with this exhaust.
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Brand: Invidia
Exhaust Orientation: Angled 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: Yes
Tip Material: Stainless Steel
Tip Qty: 2
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.




Exactly what I wanted!
GeorgeV 7 months ago
This is every bit as nice as the Cobb turbo back I was looking at, and the fitment is almost too good. It went in easier than the stock stuff came out. Just the right amount of rumble without being abnoxious, I also have the resonated downpipe and it’s just right. Rumbles and screams when you punch it, but just right.
Verified Purchase

Worth it
ThatDirtyOldMan 7 months ago
What a great product. It was really packaged well, the parts are gorgeous and RallySport Direct shipped it really fast. Install was cake and it looks fantastic. The sound is amazing without being too loud or drone... much. I'm absolutely happy with this. I did get the GrimmSpeed OEM Downpipe to 3in Cat Back Adapter and am glad as it makes the fit so much better.

Verified Purchase

Perfect Note
Tyrannosaurus Rex 8 months ago
Hardest part of install was lifting the car and getting the old one off, curse you NY winters and rust! Sounds great no rattles with stock hangers. Was able to get it all done in 2 hours. I can drive normally with out getting noticed but if you step on it you’ll love it. A bit of a drone around 2.3k - 2.6k rpm under load but otherwise fantastic. Pairs very well with an accessport and down pipe too. Nothing but smiles. Also great delivery time from rally these guys and gals are great!

Pretty Loud
Rufiohhh_Sensei 2 years ago
This is pretty loud. Haven't really stepped on it but when you go past about 3500 rpms is when its the loudness kicks in. Paid 100 bucks at the muffler shop to have it installed. The guy said it fits perfect. I bought two of the kartboy extended hangers but only used one of it for the middle past the mufflers and a little bit behind where the spare tire sits. Honestly was expecting it to be louder but its still a big difference from stock and its a great bargain for the price. Sorry if the photos are sideway, don't know why its uploading that way.

Verified Purchase

2016 WRX
Sunman 3 years ago
Picked this up during the Black Friday sale and was it a sale... It was a straight forward install and pretty simple. Would've been a lot easier if the car is on a rack. Overall I'm very happy with the way it looks and sounds. I was expecting the N1's to be a lot louder, but many others have already commented that its no louder then OEM at cruising, but when you step on it, you know it. I'm at a stage 1 (Cobb Big SF Intake + Invidia N1 + Cobb OTS tune). Next I'll be installing the Invidia resonated downpipe (some other goodies) to put me at stage 2 along with a visit to the local tuner. I've been told that this will definitely make it louder.


  • Q: Invidia N1  CG 5 months ago


    Will the Invidia N1 from a 2017 base STI fit my 2018 base WRX ? Thank you

    • A: Yes, this exhaust will work for both 2017 STI models and 2018 WRX. As it's designed for 2015+ WRX and STI models.

      Brady R 2 months ago
  • Q: N1 fitment & Hangers  Reese 1 year ago


    Do I need to purchase an adaptor, grimmspeed adaptor, if I wanted to connect my Cobb catted downpipe to the Invidia N1? Also, would the stock hangers make the tips hang to low because I would prefer a high and tight fit.

    • A: An adapter is highly recommended if installing with a downpipe that uses a Donut gasket like the Cobb or OEM. The stock hangers generally work well but a stiffer option like the Kartboy hangers can be used.

      Evan M. 1 year ago
  • Q: Fitment  Delano 2 years ago


    Will this fit up to a tomei expreme down pipe?

    • A: If the Tomei down pipe is a 3" flange, this should bolt up to it.

      Chris W. 2 years ago
  • Q: Hi  James 3 years ago


    Is this exhaust 3" all the way to where mid pipe mates to down pipe? Or does it reduce to 2.5"?

    • A: The y-pipe after the midpipe does reduce to a smaller diameter 2.5", but with there being two pipes volume actually increases.

      Nick S. 3 years ago
  • Q: 2016 sti base   Kensorhaddock23817 3 years ago


    will this fit my 2016 sti.

    • A: Yes, as there were no changes between 2015-2016 models.

      Brady R 3 years ago