GrimmSpeed OEM Downpipe to 3in Cat Back Adapter

Part #: GRM 077046
( 32 reviews )

$39.00



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Return Policy | Shipping


CONFIRM FITMENT


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.



SPECS


Brand: Grimmspeed
Material: Stainless Steel
QTY: 1
Adjustable: No
Gaskets Included: Yes
Mfgr. Warranty: 2 Years
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
  INSTALLATION INSTRUCTIONS

CONFIRMED FITMENT


Subaru Impreza
WRX STI 2004, 2005, 2006, 2007WRX STI Limited 2007WRX STI Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX STI Special Edition Hatchback 2010WRX STI Limited Sedan 2011, 2012, 2013, 2014WRX STI Limited Hatchback 2011, 2012, 2013, 2014WRX STI Sedan 2011, 2012, 2013, 2014WRX 2002, 2003, 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 20142.5 GT Sedan 2009, 20102.5 GT Hatchback 2009, 2010
Subaru Legacy
GT Limited 2005, 2007, 2008, 2009GT 2005, 2006GT spec.B 2006, 2007, 2008, 2009
Subaru Forester
XT 2004, 2005, 2009XT Premium 2005, 2010, 2011, 2012, 2013XT Limited 2006, 2007, 2008, 2009, 2010Sports 2.5 XT 2008XT Touring 2011, 2012, 2013
Subaru Outback
XT 2005, 2006XT Limited 2005, 2007, 2008, 2009
Subaru Baja
Turbo 2004, 2005, 2006
Subaru WRX STI
Base 2015, 2016Limited 2015, 2016Launch Edition 2015
Saab 9-2X
Linear 2005Aero 2005, 20062.5i 2006

Exhaust leaks seem to be an all-too-common issue with most modded Subaru’s. They tend to spring up out of nowhere and cause hours of troubleshooting headaches. One of the most common leaks that we hear about is from running an OEM downpipe with an aftermarket 3" catback without a proper adaptor. Use an adaptor that allows you to retain your stock donut gasket for the best solution to finally end that pesky leak.

CNC machined from mild steel and zinc coated for durability and longevity, this thing will outlast your car. Don't waste your time trying to get your OEM downpipe to seal without a donut gasket. In a short amount of time, they rust and corrode and will prevent you from ever getting a good seal with a typical flat gasket. Re-use your stock donut gasket along with a GrimmSpeed 2x Thick 3" Gasket for a perfect seal on the first try!

REVIEWS ( 32 )

OVERALL 4.8

87%
5 STAR
9%
4 STAR
3 STAR
2 STAR
3%
1 STAR
Verified Purchase
Looks great and works even better
Simply Stu 1 month ago
Bought this along with my Invidia Q300 CBE for my 2015 STI. Looks amazing, and is made from high quality aluminum. Install was a breeze, I also bought a new donut gasket to get a fresh seal. The only thing I didn't use out of the box, were the nuts. I opted to go with copper nuts instead of the supplied ones, just for extra security. And I also used washers to fill in the gap between the two flanges. Also a big notice will be that bumper clearance will change a bit, due to the added extra 1/2". Worth the money, and so far with 1000K in there are no leaks at all.

Best stock to after-market exhaust adapter around!
SubieMan7 3 months ago
If your going for a cat-back exhaust with a stock downpipe, this adapter is a must to avoid leaking at the connection...
Verified Purchase
J Reynolds
J Reynolds 3 months ago
No problems. You should tell those ordering a cat back system that this adapter is recommended. I had to call, after getting my Q300 system, to clarify that should have the adapter.
Verified Purchase
downpipe
boosted12 4 months ago
Great product good price if you have a oem downpipe and a cat back then need this had an exhaust leak and bought this and great seal no more leak and simple install
Verified Purchase
Fits Like a Charm
Sunman 4 months ago
I highly recommend this part if you are retaining OEM downpipe and to aftermarket CBE to ensure there will not be any exhaust leak. It fits like a charm. My worries were that this would push the Invidia N1's out too far (i.e., showing too much tip) on my 2016 WRX, but it was just right.
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QUESTIONS & ANSWERS (30)

  • AnswerQ: Exhaust seal  Neez 06 13 days ago

    I want to connect oem dp to 3in CB. To get a perfect seal with this product , will I still need to use the stock donut gasket on the dp side and a 3in gasket on the CB side?


    • A: Yes, you will want the OEM donut gasket on the down pipe, then the adapter, then the gasket to the catback. There is a picture under User Media on this product page that gives a good explanation of how the products should sit.


      Chris W. 13 days ago


  • AnswerQ: Fitting  Gregboy 1 month ago

    I plan on buying the N1 Duel this week. You recommended this part, but when I added it to my basket it told me that it would not fit my 2015 WRX. Are you sure this is the right part?


    • A: Although your car is not on the confirmed applications list, I dont see there being any issues with using this adapter.


      Josh P. 1 month ago


  • AnswerQ: Exhaust Tips  AJ 2 months ago

    how far will the Invidia N1 Dual Tips stick out when this is installed?


    • A: This adapter only adds about a half inch to the overall length.


      Nick S. 2 months ago


  • AnswerQ: adapter  noahmancini12765 2 months ago

    Are there any other options for this? the adapter is to wide and will not fit with the stock downpipe bolts unless the holes are elongated. I've tried to install with a 2.5 downpipe to a 3inch invidia n1 and it would not fit/align correctly.


    • A: Generally we dont have any fitment issues with this product. Please call us so we can better assist.


      Trevor C. 2 months ago


  • AnswerQ: Will I need this?  jpdoeun71755 4 months ago

    I have a Cobb downpipe and Perrin catback exhaust that I am going to put on my 2014 WRX hatchback. Will I need this adapter for this combination?


    • A: To guarantee the best fitment this part will be needed.


      Trevor C. 4 months ago


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