Invidia Q300 Cat Back Exhaust

Part #: INV HS08SW4GT3
( 25 reviews )


MSRP: $1,081.00


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Brand: Invidia
Exhaust Orientation: Straight Exit
Installation Hardware Included: Yes
Piping Coating: No
Piping Flex Joint: Yes
Piping ID: 76mm
Piping Material: 304 Stainless Steel
Piping Taper: No
Silencer Included: No
Tip Material: Stainless Steel
Tip Qty: 2
Tip Shape: Round
Tip Size: 101mm
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.


Subaru Impreza
WRX Sedan 2008, 2009, 2010WRX Premium Sedan 2010WRX Limited Sedan 20102.5 GT Sedan 2009, 2010
Subaru Forester
XT 2009XT Limited 2009, 2010XT Premium 2010, 2011, 2012, 2013XT Touring 2011, 2012, 2013

The flat bottom shaped muffler design results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater horsepower, torque gains and a rich deep sporty sound.

The use of SUS304 polished stainless steel piping, Mandrel bent to shape, state of the art CNC machine made flange, Robot TIG welding and double wall polished stainless steel or Titanium tips, provides outstanding durability and appearance.

REVIEWS ( 25 )



Well built, good performance
Theo K 2 years ago
Upon receiving all the welds, surface polishing etc were not poor at all on any of the components. Compliments my stage 2 2010 wrx sedan well. It isn't quiet like many posts say, one knows that it is there regardless of speed and throttle, not a drone, even up steep hills. Bolted it up to a GrimmSpeed catted DP, no adapter.
Verified Purchase
Just the touch
jmcrae31 2 years ago
Just put this on my 2010 Forester XT, wasn't wanting anything loud and wanted something stock, this hit the nail on the head, has a nice low sound but can def hear the boxer motor, took about 20 mins total to install, super easy
Verified Purchase
takeadirtnapp41997 2 years ago
did a ton of research on this exhaust before purchasing. It paid off. Fit was great, install was a big tough on ramps, but the sound is amazing.
Verified Purchase
Q300 on FXT
Teodoro 2 years ago
Installed it on my FXT along with the Invidia downpipe. Sounds awesome. Not too loud. Good choice when looking for a catback exhaust for your forester.

Best Exhaust to get!
2008WRXLINY 3 years ago
I have a 2008 wrx sedan with invidia q300 catback exhaust and invidia catted down pipe. This exhaust is by far one of the best on the market. Most subaru drivers use Invidia because of its quality and its priced at a fair price! This exhaust is loud, but not overbearing! I have been told by other people who drive subarus that my exhaust sounds great and my friend who has a blitz exhaust on his STi said my Turbo-back setup is louder than his turboback setup. I would recommend this exhaust to everyone who wants one for their sedan. I recommend dual tip over the single.


  • AnswerQ: Invidia q300 exhaust  jsschrepel10154 23 days ago

    Would I need any adapters or extra gaskets to mount the invidia q300 cat back to a stock downpipe/cat?

    • A: We highly recommend getting GRM 077046 and SUB 44022AA123

      Tyler.G 21 days ago

  • AnswerQ: Q300 midpipe Vs. N1 midpipe  waidhoyt37835 2 months ago

    Hi I'm comparing the two exhausts for my 2010 WRX. Is the midpipe the same 3" midpipe for both? Thanks.

    • A: The midpipes are very similar, but may differ slightly.

      Josh P. 2 months ago

  • AnswerQ: weight  MR_BIG 11 months ago

    whats the shipping weight including box? Thx

    • A: This item is 69 lbs.

      Nick S. 11 months ago

  • AnswerQ: 14 - 15 forester xt  Menard4605657 1 year ago

    Does this fit the new style forester xt (14-15)?

    • A: This exhaust will fit 2014-2015 Forester XT models, but the tips do not stick out as far as they should. Invidia is making a catback specifically for 2014+ FXT models, and the part number is INV HS14SFXG3S.

      Zach G. 1 year ago

  • AnswerQ: Emissions  Ironman53 1 year ago

    Will my '09 Forester pass Pa emissions after I install thIs?

    • A: All products are meant for off road use only and we cannot confirm emissions compliance.

      Nick S. 1 year ago