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GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted (Part Number: )
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GrimmSpeed J-Pipe 3in Catted (Part Number: )
GrimmSpeed J-Pipe 3in Catted
Subaru WRX 2015+
Read 4 Reviews | 6 Q&As
Part # 007103

Ships within 24 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 - 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.
RallySport Guarantee



4 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)
Grimmspeed J-Pipe = High quality 10 months 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 1 year 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 2 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 2 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: Fitment   16WRX1 year ago

    Will this downpipe bolt right up to an invidia r400 cat back
  • Q: FItment  Mars1 year ago

    Will this j pipe mount to the stock midpipe?
  • Q: COBB Stage 2 MAP & Nameless Catback  PJ1 year ago

    This J-Pipe should be safe to run with a COBB Stage 2 map, right? Also, will this mate with my 3" Nameless Performance midpipe or will I need an adapter/gasket? Thank you
    • 0 of 0 people found the following answer helpful

      A:  Although Cobb, doesn't guarantee their off-the-shelf maps with other manufacturers' exhaust components, plenty of people do run them that way. After speaking with a rep at Nameless, you would not need an adapter, the tapered end of the existing donut gasket should set into the flange on your midpipe, with the other end onto the 2 bolt flange.

      Marcus E. @ RallySport Direct 1 year ago  
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  • Q: Question   Ryan2 years ago

    Will I need a converter for this downpipe to my nameless axelback? TYA
    • 0 of 0 people found the following answer helpful

      A:  If using the OEM midpipe paired to your axleback exhaust, you would want to use an adapter like part number GRM 077044 with a new dount gasket.

      Evan M. @ RallySport Direct 2 years ago  
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  • Q: Catback Compatibility  cmullin163742 years ago

    Can I use this J-pipe with a Cobb catback exhaust?