Invidia Q300 Cat Back Exhaust

Part #: INV HS02SW1G3S
( 16 reviews )


MSRP: $926.00


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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: 1
Tip Shape: Round
Tip Size: 101mm
Mfgr. Warranty: 1 year
Return Policy:

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Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

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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 STI 2004, 2005, 2006, 2007WRX STI Limited 2007WRX 2002, 2003, 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007

Are you sick and tired of seeing these huge round mufflers with huge tips? The Invidia Q300 is a stock looking exhaust with a high flow muffler. It includes a midpipe, 2 gaskets, an axleback and all the hardware needed to install this on your WRX or STi. The Q300 is made from a lightweight 76mm mandrel bent stainless steel. These exhausts are extremely subtle whether that's the appearance you're after or you're sick of getting hassled from the police. The piping is large coming in at 76mm, this is to free up some space for those exhaust gasses to go unlike the stock super restrictive system. The tip with all of its "subtlety" comes in at 101mm providing for a pleasant appearance.
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REVIEWS ( 16 )



For anyone looking at an Exhaust.
ams_rn1343612 5 months ago
If you are having a hard time deciding what exhaust to buy. STOP! This exhaust is perfect, mated to a invidia catless downpipe. It remains quiet when it needs to be and sounds amazing when you get into it. Best BUY

Completes the car
FoxTail Blue 6 months ago
Very impressed with the sound difference.
Verified Purchase
Everything I was looking for
NickAlf5656 1 year ago
Perfect sounds, awesome finish and just the look I was going for. Bolted right up to my Invidia down dp. Have had it on my car for about 6 months now. No corrosion or rust. Still looks new.
Verified Purchase
Excellent exhaust!
NoVA 07WRX 1 year ago
This exhaust appears to be extremely well-made, looks good, and sounds terrific. It produces a low, bassy rumble that sounds authoritative without being obnoxiously loud...very pleased with it!
Verified Purchase
Install bolts
ryanshawn3944962 2 years ago
Great look and sound, slight gain in power. The only thing that bothered me about this exhaust is the bolts that connect it to the cat were to large, had to go and by some new ones. 2002 wrx


  • AnswerQ: 2007 2.5i fitment   11 days ago

    Will this fit an 07' 2.5i?

    • A: This is not a confirmed fit for the non turbo Impreza and would likely need modification to fit.

      Evan M. 9 days ago

  • AnswerQ: sti 04 invidia q300 at 380 whp ?  moris3a99998 3 months ago

    I have invidia catless dp and blitz nur spec axleback but I want something less noisy like the q300. Does it support these level of hp without lost lost and what is the hp limit of these exhaust without lost?

    • A: The Q300 will not restrict power, and will actually flow more than the Blitz exhaust because it does not taper down to 2.5 inches. We have not found a horsepower limit for this or other 3 inch exhausts, and you don't need to worry about restricting power.

      Zach G. 3 months ago

  • AnswerQ: CA Legal?   hemo032007228 1 year ago

    Is this legal for us in cali? I hate cali for the laws, but love it for the car scene.

    • A: You will want to check your local laws for street use legality and we cannot comment one way or another.

      Zach G. 1 year ago

  • AnswerQ: Fitment  mark_loredo 1 year ago

    Will this bolt up to a COBB DP?

    • A: This will mate up the Cobb DP. We recommend using the OEM donut gasket along with the Grimmspeed adapter for the best seal.

      Spencer H. 1 year ago

  • AnswerQ: Mating (lol)  IhasSTi 1 year ago

    Will this mate up with the perrin downpipe? Assuming it will.... I would just like to make sure before spending the money.

    • A: This will mate up to Perrin's downpipe with no issue :)

      Brady R. 1 year ago

    • A: This will mate up to Perrin's downpipe with no issue :)

      Brady R. 1 year ago