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Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single (Part Number: )
Invidia Q300 Cat Back Exhaust Single
Subaru WRX/STI 2015+
Read 1 Reviews | 5 Q&As
Part # HS15SW4G3S
On Sale
msrp: $972.00

Only 2 left!

Features & Product Details

If you are looking for a great way to squeeze a little extra performance from your vehicle, then you will be pleased with the Invidia Q300 Cat-Back Exhaust System. There are several performance attributes that makes this an excellent upgrade. This exhaust system has been made from 304 stainless steel and features 76mm piping. The exhaust has also been designed with minimal bends to reduce the amount of turbulence during acceleration, allowing the engine to exhale the exhaust gasses with fewer restrictions. This means you will have improvements in throttle response, along with increases in both horsepower and torque. 

This is a single exit exhaust system featuring a premium Q300 muffler and a polished tip. Exhaust hangers are welded onto the stock locations which means you don't have to perform further modifications to the body or chassis for fitment. 

New gaskets and hardware will be included to make this exhaust system ready for installation.


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
Condition: New Product
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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2 of 2 people found the following review helpful
Just the sound I was looking for 3 years ago
5out of 5stars

Received this exhaust a couple weeks ago and just installed it. Fitment was great and it feels like a very high quality exhaust. I was looking for something that would give me a deeper sound, but not a lot louder than stock, and this exhaust was perfect. You can hear it when you put your foot down, but when cruising you barely notice it's there. Now someone just needs to come up with a filler piece for the unused bumper cutout. Very happy with the purchase!
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  • Q: fitment with Cobb Downpipe  S2000_Europe7 months ago

    Do I need an adapter to fit the exhaust with Cobb Downppipe?
  • Q: 2013 Impreza 2.0  tomp.ohara786373 years ago

    Any idea if this will fit a 2013 2.0 Premium Impreza? The tubing and hanger placement look identical to the stock system.
    • 0 of 0 people found the following answer helpful

      A:  Unfortunately, we can not confirm fitment for your 2013 Impreza. As this is designed specifically for the WRX models listed in the "Confirmed Applications".

      Brady R @ RallySport Direct 3 years ago  
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  • Q: fitting  mgm4 years ago

    Could You check if it fit to 2011-2013 sedan sti's (GVB) ?
  • Q: Sound clip?  robbWRX4 years ago

    I can not find a single sound clip of this exhaust all over the internet. Is it possible for you guys to make one? Cheers
    • 0 of 0 people found the following answer helpful

      A:  We do not have a sound clip at this time but we can look into the possibility of creating one.

      Nick S. @ RallySport Direct 4 years ago  
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    • 0 of 0 people found the following answer helpful

      A:  Found on Youtube on a 2015+ STi:

      Sammy @
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