Invidia Downpipe Catted Divorced Wastegate w/ 2 Bungs

Part #: INV HS08SW1DOC
( 17 reviews )


MSRP: $793.00


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Brand: Invidia
Includes Catalytic Converter: Yes
Installation Hardware Included: Yes
Mouth Design: Divorced Wastegate
Piping Coating: No
Piping Flex Joint: No
Piping ID: 3.00in
Piping Material: 304 Stainless Steel
Piping Taper: No
Catalytic Converter Cell Count: 200
Mfgr. Warranty: 1 Year
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.


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The Invidia Catted Downpipe features a Divorced Wastegate and cat, this will separate the exhaust gas exiting the downpipe, creating a smoother exhaust flow, thus resulting in more HP and Torque. All this while keeping the exhaust fumes clean and safe for the environment.

The downpipe is constructed of 304 stainless steel 3" mandrel bent tubing and bolts up to any stock replacement catback or stock unit. New Downpipe Gasket recommended for purchase with this downpipe.

This downpipe also has an extra oxygen sensor bung welded in so you can install a wideband oxygen sensor and keep the stock one intact. It comes with a plug installed so you don't have to worry about not having one.

REVIEWS ( 17 )


Verified Purchase
Subaru STI 2013 - Performance and Quality plus Sound
jeffreyvelez 2 months ago
When I started modding my car this was the second thing I bought after intake. I bought this DP with the Q300 exhaust. This DP give me a lot HP gain and car is pretty fast now after Pro-tune. I love the way I gain power with just this DP, Exhaust, intake and accesport. Sound, what can I tell I don't need radio anymore. Product is high quality and performance its incredible. I highly recommend it.

Verified Purchase
Great downpipe
306Scooby 4 months ago
Matched this downpipe with an invidia q300 system for stage 2. Significant increase in power with the appropriate items for stage 2. Highly recommend item. Comes with plug for bung or ( I used wideband O2) sensor.
Verified Purchase
Jj08wrx 5 months ago
Just hooked this baby up to my n1 catback running a ots Cobb stage 2 map incredible boost in power literally!!! 08 wrx
Verified Purchase
craze191st 8 months ago
After a little less than 2 years, still looks great, still sounds great!

Excellent craftsmanship!
PhillipsKJ 10 months ago
I am very pleased with this downpipe. I was looking for a true 3 downpipe which only a few other brands offer. I now have stage 2 map for my accessport, Cobb intake and an Invidia N1 cutback exhaust. Sounds great! Sounds the same at idle but when you put on the throttle, it's a monster. Rallysport Direct has an awesome customer service! Thanks guys!


  • AnswerQ: DP  Darwrath 3 days ago

    Is the gasket avaible on this site?

    • A: Invidia doesn't sell the gasket separately. I would recommend GRM 022001 for a replacement gasket.

      Megan L. 3 days ago

  • AnswerQ: 2010 subaru wrx   Paradise_17 4 days ago

    Will this fit nicely on a Megan racing exhaust and what else would I need to get with it for e.g. pro tune gaskets etc.

    • A: We can't confirm how it will fit with the Megan racing exhaust that you currently have. With a downpipe you will want a tune and you could do that with an accessport from Cobb.

      Megan L. 3 days ago

  • AnswerQ: bungs  cfoulk12 14 days ago

    i was wondering if this comes with plugs for the bungs or do i have to purchase them separately ?

    • A: Invidia does includes one plug for this downpipe and is pictured as installed.

      Evan M. 11 days ago

  • AnswerQ: Cell count  Hawkeye 1 month ago

    I know Cobb uses a 200 cell count for their cat, but what does Invidia use on this DP?

    • A: Invidia also uses a 200 Cell Count Cat.

      Evan M. 1 month ago

  • AnswerQ: California   M818209 1 month ago

    Is this downpipe California state legal?

    • A: This is not California legal and meant for offroad use only.

      Nick S. 1 month ago