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Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth (Part Number: )
Injen Downpipe Catted Bellmouth
Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Read 4 Reviews | 10 Q&As
Part # SES1202DP

In stock! Ships same day

Features & Product Details

The Injen Downpipe is a Full 3" Catted Downpipe made from 304 Stainless Steel. It features a Cast Bellmouth, High Flow Catalytic Converter, Integrated CEL Fix, and an Extra O2 Bung for a wideband O2 sensor.

Because this product replaces/removes an OEM emissions control device we must state that this product is for offroad use only.


Brand: Injen
Includes Catalytic Converter: Yes
Installation Hardware Included: Yes
Mouth Design: Bellmouth
Piping Coating: No
Piping Flex Joint: No
Piping ID: 3.00in
Piping Material: 304 Stainless Steel
Piping Taper: No
Tuning Required: Yes
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.
WARNING: Cancer and Reproductive Harm -



4 Reviews
4.8 out of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Customer Photos and Videos
No user media. You can upload a photo or video of your install by posting a review.
Very well constructed downpipe 4 years ago
5out of 5stars

I am very happy with this purchase. Really woke up the car and brought out more of the great boxer rumble. I would deff reccomend this downpipe. Best bang for your buck.
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Good downpipe for the price 4 years ago
4out of 5stars

Bought this and Mated it with a Invidia N1 Catback. Sounds Great, Only downside was the placement of the Front 02 Bung was not able to fit the cobb heatshield. I compensated with using a heatblanket. All in all its good.
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Installed on 9-2x aero 6 years ago
5out of 5stars

Just installed the injen downpipe on my 9-2x aero. (2005 2.0) and matched up great with the stock turbo and blitz nur spec exhaust. Welds look great and installed with no fitment issues. Would definitely recommend this downpipe to anybody going stage 2 and trying to save a few dollars over the other popular choices. Comes with 02 bung as well which is a plus!
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Best Bang 4 the Buck 8 years ago
5out of 5stars

I absolutely love this Downpipe, it gave my car that aggressive edge it was missing and it sounds great with my invidia uppipe and cat back.
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  • Q: Tune  bmcconnell21 year ago

    So a tune is required. Is this to prevent CELs or is this to get the most out of the product? I have an Auto Zone down pipe now on my 03. I suspect the product is 10 years old. I can not clear the bank 2 O2 code. I would like to use this product to pass inspection. Thoughts?
    • 0 of 0 people found the following answer helpful

      A:  We cannot comment on items that were not purchased through RallySport Direct. We don't know what type of downpipe is an Autozone one. We also cannot say whehter or not you will pass inspection with that. Please consult your local health department for further information or your local state inspection DMV.

      Tyler A. @ RallySport Direct 1 year ago  
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    • 0 of 0 people found the following answer helpful

      A:  A typo. My bad. Auto Speed down pipe and cat back exhaust.

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  • Q: Fit HKS Hi-Power?   WhatCat?2 years ago

    Contrary to my name, will this catted dp bolt up to the HKS Hi-Power without issue? Do I need anything else for install?
    • 0 of 0 people found the following answer helpful

      A:  This downpipe should bolt to the HKS Hi-Power catback without the need of additional adapters.

      Connor M. @ RallySport Direct 2 years ago  
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  • Q: Retune?  joebob1883016253 years ago

    Will i have to re-tune my '03 subie with the installion of this downpipe?
  • Q: sound level  not12listen962744 years ago

    would running this catted downpipe increase the sound within the cabin? if yes, is there a 'rough' idea of how much louder it is?
    • 0 of 0 people found the following answer helpful

      A:  Added in cabin noise is expected with any aftermarket downpipe. I would imagine with this being catted, it wouldn't be as loud as a catless downpipe.

      Brady R. @ RallySport Direct 4 years ago  
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