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Invidia Q300 Cat Back Exhaust
2002-2007 Subaru WRX/STI
Features & Product Details
RallySport Direct proudly carries a large selection of quality high-performance master-crafted exhaust options brought to you by Invidia.
This is the Invidia Q300 Cat-Back Exhaust System. The Q300 is a highly coveted exhaust system among enthusiasts because it gives them everything they want in terms of a performance upgrade. You get premium fabrication using quality materials that are combined with machined welds. The design features very smooth radius bends with an increase in piping diameter to allow for an unobstructed flow path for the exhaust to escape. And the beautiful polished finish right out of the box will check all the aesthetic boxes to provide the rear of your vehicle with a pronounced look. The final result will provide the user with a nice increase in power and torque, and improvements in the throttle response. The most rewarding aspect is the race-inspired sound. From mild bolt-ons to full builds, the Invidia Q300 will change the character of your vehicle to make your driving experience much more enjoyable.
DETAILS:
Specifications
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REVIEWS & CUSTOMER MEDIA
Install was a breeze and it took a little over an hour. I ended purchasing the Grimmspeed Downpipe to 3" cutback adapter as well. I took it out for a test drive and there's no annoying drone and has a nice deep tone to it. Looks great on my 03 Bugeye WRX and my neighbors won't hate me anymore. This exhaust is perfect if you're looking for something subtle but still has that subi rumble.
Just installed this on my 05 WRX Wagon. I was looking for a stock replacement that’s a bit more fee flowing and not too loud. This fit the bill. Zero rasp but good meaty sound. You can hear it from the cab but it’s not very loud and the idle is just a hair louder than stock. I’m waiting on the Grimmspeed coupler but the exhaust fit well enough on the stock donut gasket for a temporary fit. I’d be careful about how tight you torque it though, to not gouge the gasket since you’ll be using it later. One complaint, the bolts that came with the exhaust are too large to attach to the cat. I had to use M8 bolts to attach and the exhaust comes with M10 bolts. Great overall
I have owned a few different exhausts for my 07 WRX, but this one is my favorite. (I’m getting old too, so might have to do with it). Fitment is perfect, might want to grab some long and short hangers though to play with the height. But sound is amazing. I had the N1 with resonator before, it was loud, good loud, but too loud. This Q300 though, it’s almost the same level at idle and low RPM, but it doesn’t “scream” like the N1 when you get into high RPM, it’s more civil. After 4K RPM on N1, I felt like everyone thought I was trying to race. This is still plenty loud enough for me, just Mature and not as raspy. No change in noticeable performance. Think I still like the look of N1 slightly more. The tip is the same size though too, wouldn’t guess from pics.
I have this installed on my 2000 Subaru 2.5rs and it fits perfectly using most of the existing hanger brackets with the longer Kartboy polyurethane exhaust hangers. I had to also get an adapter and a new donut gasket to mate it with my Cobb downpipe. The sound is exactly what I was looking for and does not have an obnoxious drone from inside. It's quiet when the car is idling and does not bother my neighbors when I leave for work early in the morning. However, when you want to unleash the beast, you can definitely hear that infamous Subie rumble!
Easy to install. And sounds great a deep tone that doesnt drone. A great buy. I came from a invidia n1 race
QUESTIONS & ANSWERS
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Q: 2006 wrx wagon. Invidia q300 Ray 2 years ago
Does this include gaskets and hardware for the 3 inch flanges? I know I'll need the adapter for the stock downpipe and donut gasket.
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A: Yes, gaskets and hardware are included.
Jesse F. @ RallySport Direct 2 years agoWas this answer helpful?
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Q: Flow n1 vs q300 sprint200mm830023 years ago
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A: I doubt you would notice a difference at all. The dyno might measure a few HP loss, but in the real world, you would not be able to tell outside the reduction in noise of course. I say go for it and I think you'll be super happy with the way this sounds on a high HP car :)
Rick C. @ RallySport Direct 3 years agoWas this answer helpful?
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Q: 2004 sti stock downpipe fitment Jordan 3 years ago
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A: You would need part#077044 if you are running stock downpipe
Johnny M. @ RallySport Direct 3 years agoWas this answer helpful?
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Q: invidia q300 hans4 years ago
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A: We do not have decibel ratings unfortunately
Devan M. @ RallySport Direct 4 years agoWas this answer helpful?
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Q: Invidia Catted Divorced downpipe bmscone464775 years ago
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A: This will bolt up directly to the Invidia downpipe!
Megan L. @ RallySport Direct 5 years agoWas this answer helpful?
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