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GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+
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User Media for: GrimmSpeed J-Pipe 3in Catted - Subaru WRX 2015+

GrimmSpeed J-Pipe 3in Catted

Subaru WRX 2015+

Read 5 Reviews | 10 Q&As
Part # 007103

Ships within 16 days

Features & Product Details

Grimmspeed’s catted J-pipe/downpipe for the 2015 models with the manual transmission option is here, and once again meticulous engineering meets elegant design. If you’re in the market for one of the best aftermarket catted downpipes, look no further. This is a direct bolt on no hassle replacement that is designed with one piece construction, excellent ground clearance, with superb quality and craftsmanship. Let’s look at their other features.

• This is a one piece tube with Grimmspeed’s patented turbo flange design. This flange is ½” thick while retaining all OEM brackets.
• Provides a smooth 3.5 to 3” transition from the turbine outlet to the rest of the pipe.
• Excellent ground clearance without having to alter suspension components.
• Custom stainless turbo studs to accommodate the Grimmspeed ½” flanges.
• Standard 3rd O2 bung for use of aftermarket sensors.
• 300 Cell Metallic Substrate Catalytic Converter. Provides an excellent balance of reduced restriction of a ‘race cat’ compared to a 200 cel unit.

These are 100% made in the U.S.A., and come provided with all the necessary gaskets and hardware for a ready installation.


Brand: GrimmSpeed
Includes Catalytic Converter: Yes
Installation Hardware Included: Yes
Piping Coating: No
Piping Flex Joint: No
Piping ID: 3.00in
Piping Material: 304 Stainless Steel
Piping Taper: No
Tuning Required: Yes
Mfgr. Warranty: Lifetime
Condition: New Product
Return Policy:
RallySport Guarantee



5 Reviews
5 out of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Customer Photos and Videos
GrimmSpeed J-Pipe 3in Catted ( Part Number: 007103)
Great buy 1 year ago
5out of 5stars

I love this downpipe. Install was easy, the hardest part was breaking the top right oem bolt on the turbo loose, other than that everything fit like a glove. I recommend this to anyone considering a j-pipe upgrade. The sound and quality is amazing.
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Grimmspeed J-Pipe = High quality 2 years ago
5out of 5stars

Grimmspeeds attention to detail makes this an amazing product. Also Grimmspeed is the preferred brand of my Tuner
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Incredible Part, Sounds Great 3 years ago
5out of 5stars

It took me a bit to line up this install and pro-tune but I got it all squared away and it sounds absolutely phenomenal. You hear your turbo spool very clearly but it's nothing too obnoxious. Install was pretty easy. Just WD-40 the turbo studs before you try to take the nuts off. I had no trouble with them stripping or cross threading. AWESOME product Grimmspeed.
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Love it 3 years ago
5out of 5stars

Great quality, bolted right on my 2018 wrx premium. Comes with all the gaskets needed and new studs and nuts for the turbo. Only difficult part was getting the oem one out.
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J-pipe 4 years ago
5out of 5stars

The j-pipe is a great piece. Fitment is perfect and the sound is so much more aggressive paired with my Greddy catback. Getting the stock pipe off is by far the toughest obstacle with this install and penetrating oil is a must. I would also recommend the SK semi-deep impact socket because it made the nuts on the studs much more accessible to reach. Overall the j-pipe is a quality piece and it really brings the FA motor to life. Install is a breeze and it includes all necessary gaskets and hardware.
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  • Q: will this fit  NUNU12 months ago

    will this bolt up to the AWE TRACK EDITION EXHAUST?
  • Q: Catalytic converter location  @Ryguysti1 year ago

    In your opinion, is there any reason why some manufacturers place the catalytic converter immediately post turbo while others chose to place it more downsteeam like with this Grimmspeed unit?
    • 0 of 0 people found the following answer helpful

      A:  In theory, a cat placed further back will have less back pressure. That said, having the cat closer to the turbo will heat the catalyst more quickly and allow it to perform more efficiently, so there are benefits to both configurations.

      Marcus E. @ RallySport Direct 1 year ago  
      Was this answer helpful?
  • Q: Boost  2017 WRX AWE Exhaust2 years ago

    I read on phatbotti tuning that catted downpipes are safer and prevent boost creep. Will this downpipe prevent boost creep?
    • 0 of 0 people found the following answer helpful

      A:  Catless downpipes will only cause boost creep if tuned improperly, but this catted downpipe will be your safest bet when using OTS maps.

      Tylo R @ RallySport Direct
      Was this answer helpful?
  • Q: Fitment  Archangel2 years ago

    Will this bolt strait too the borla s type catback or what will I need for proper fitment
    • 0 of 0 people found the following answer helpful

      A:  The Borla tapers down to a stock 2.5" flange, you'll want to run a 3" downpipe to OEM catback adapter.

      Marcus E. @ RallySport Direct 2 years ago  
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  • Q: Fitment   16WRX3 years ago

    Will this downpipe bolt right up to an invidia r400 cat back