Invidia

Invidia Q300 Exhaust 06-11 Honda Civic Si 8thcivic Coupe & Sedan FA5 FG2

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SKU:
Invidia HS06HC4G3S
MPN:
HS06HC4G3S
Shipping:
Calculated at Checkout
  • 06-11 Honda Civic Si Q300 Exhaust Sedan Coupe 8th gen civic fa5 fg2 k20z3 2006 2007 2008 2009 2010 2011
  • 2006 2007 2008 2009 2010 2011 Honda Civic Si Exhaust System Q300 Invidia Quietest Exhaust System
  • 2006-2011 Honda Civic Si Exhaust System by Invidia The Q300 one of the best exhaust systems for the 8th gen civic
  • Q300 Exhaust weld and flange on a 2006-2011 Honda Civic Si
  • Q300 Titanium Tip Exhaust for 06-11 Honda Civic Si 2006 2007 2008 2009 2010 2011
  • 2006 2007 2008 2009 2010 2011 Honda Civic Q300 TI Tip Exhaust
  • 2006 2007 2008 2009 2010 2011 Sedan White Civic Si Q300 Exhaust HFP Rear Lip
  • 2006 2007 2008 2009 2010 2011 Sedan Red Civic Si Q300 Exhaust HFP Rear Lip
  • 2006 2007 2008 2009 2010 2011 Sedan White Civic Si Q300 Exhaust HFP Rear Lip how it sits
$610.21 - $655.13

Description

Invidia Q300 Exhaust for 06-11 Honda Civic Si (Sedan or Coupe) FA5 / FG2

The Invidia Q300 for the 2006-2011 Honda Civic Si, this is a twin loop stainless steel cat-back (full) exhaust system that has superb quality and fitment. This exhaust comes in either stainless tip or the burnt titanium tip. The exhaust is 2.75 inches or 70MM providing excellent flow for N/A or boosted applications. This exhaust is engineered with a twin loop design, which is similiar to the mugen Exhaust. This feature helps reduce the sound and make for a smoother more compact transition.

Sound note: The exhaust note on this car due to its baffled, twin loop design would probably be a 5/10 on exhaust noise. With oem being a 2/10. Under wide open throttle, the noise gives a good growl, while allowing the beautiful intake note on the k-series engine to charge ahead. This makes the Q300 one of the most popular exhausts for the 8th Gen Civic Si.

One of the quietest exhausts you will find for the 06-11 8th generation Civic Si, it provides a sporty & smooth tone that opens up under full throttle. Paired with a great price and a great looking angle rolled tip this is an excellent choice for many, especially those most who desire sleeper exhaust notes. Bolt-on oem like fitment, install is quick and easy, this exhaust runs directly from the header all the way back. The exhaust works with both oem and aftermarket headers.

"This exhaust system is one of our favorite, due to the low noise and rumble it provides a more sporty note over oem and the best pricing" -- HARDmotion Team

Overview:

Quietest Exhaust for the 8th Gen Civic
Wonderful sound under wide open throttle
Stainless Steel Consutrction
Twin Loop Internal Muffler
2.75 Inch or 70MM
Stainless or Titanium Tip
Full-Exhaust all the way back from header
Works with oem and any aftermarket exhaust

Options:

Sedan [4door] or Coupe [2door]
Stainless Or Titanium Tip

Loudness:

We rate this exhaust as one of the lower noise levels, this is one of the most popular exhaust due to this fact. Pair this with a nice intake and your car will sound absolutely beautiful. If you are a mature driver who wants added performance and a respectful sound. This is the exhaust for you. 

Part #'s: Fitment

06-11 Coupe Si:
Titanium: HS06HC2G3T
Stainless: HS06HC2G3S
06-11 Sedan Si:
Titanium: HS06HC4G3T
Stainless: HS06HC4G3S

Available for:
2006 2007 2008 2009 2010 2011
8th generation Honda Civic Si w/ k20z3 motor fa5 fg2 chassis

FREE SHIPPING USA 48 States

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13 Reviews

  • 5

    Q300

    Posted by Glen Campbell on Jul 22nd 2024

    I've had 4 exhausts for my 8th gen and this is my favorite so far. If you want something loud, don't get this. This is a little louder than stock, so it's quiet. You can hear it pretty good when you want to get on it. Flows well. Perfect for a fun daily driver. Build quality is great.

  • 5

    Invidia Q300 cat-back for 8th gen Civic Si

    Posted by Eric Marshall on Mar 20th 2023

    This is my dream exhaust. It’s everything I’ve wanted from the moment I began lusting after it. I’ve never been one for those hyper-ridiculous exhausts and “fart cannons” as people like to designate them as. I wanted a modest sound improvement and that’s exactly what this exhaust system delivers. The tone of the exhaust is quite similar to stock but with a deeper, richer, more full note. This is definitely one of the most quiet exhausts for the 8th Gen Si, so if that’s not what you want I would choose a different exhaust. However, if you want a truly OEM+ exhaust system that makes your car sound like it should have from factory, this is the one. The build quality is top tier. The welds are beautiful, and the fitment is like Honda made the exhaust system themselves. It’s perfect, super simple to install, and sits perfectly in the exhaust tip outlet. Absolutely beautiful. One con: The exhaust does have a bit of drone at 3,000-3,6000 rpm. Which is perfectly at 70-75mph when you’re on the highway. I don’t mind it but it is present, though I’m sure other exhaust systems would be worse if they’re louder elsewhere. Overall 9/10 and would recommend to anyone looking for an excellently made, beautiful sounding exhaust!

  • 4

    Shipping

    Posted by Justin Nguon on Jan 26th 2022

    Product was amazing no cracks or bends from shipping had all the hardware fit the car like a glove and sounds amazing , the wait time for it was the only flaw waited about 4 months. (Not hardmotions fault but how things are right now due to supply)

  • 5

    Invidia q300

    Posted by Abraham Cabrera on Apr 20th 2021

    Best exhaust for 8th gen civics. Had a full race before this one and it was way too loud.

  • 5

    love it!!!

    Posted by Robert on May 21st 2020

    I freakin love this exhaust!!! It sounds great, nice deep tone. This exhaust is very quiet for an aftermarket catback, but it's exactly what I wanted. Couldn't be happier. hardmotion was extremely fast shipping it out.

  • 5

    Quiet but noteworthy.

    Posted by Laax on May 17th 2020

    Before I get to far into the review, my current setup on my 09 FA5 consists of a K&N Short Ram Intake, stock headers and now an Invidia Q300. No tune yet, so a very basic setup as of writing. That said, I wanted to go with an exhaust that would be a step up from stock, yet quiet enough not to draw undue attention. After spending a few hours with videos and personal reviews, I opted to go with the Q300 because it met what I was looking for. Personally, I feel that it's not that much louder than stock. It has a meaty feel, and I've felt a difference with the ol' butt dyno when I let vtec open up. There is a noticeable drone in the 3k-4k operating range, but even with a stock radio, you can offset that by turning up the volume slightly. Overall, I love the way the exhaust sounds and looks. If you're looking for something to catch attention, personally I'd say look elsewhere. If you're trying to stay lowkey but move beyond stock, this is where it's at.

  • 5

    Great Modification

    Posted by Jacob Kroll on Nov 2nd 2018

    I wanted an exhaust that wasn't obnoxious but made my 8th-Gen Si sound better than stock. I did a lot of research about this versus other exhaust systems like the Invidia N1 and the Full Race exhaust and for the value I went with the Q300. Had a professional install it and it sounds amazing! If you want a mature exhaust note for your Si, look no further and get the Q300. If you're looking for a little more performance and price isn't an issue, I'd look into the Full Race. Can't go wrong with either one. Shipping took a while because they were on backorder but it was shipped in perfect condition. Thanks Hardmotion! I will definitely use this site for future mods.

  • 5

    The best mature catback exhaust for Civic SI

    Posted by Andrey Kukhar on Mar 10th 2018

    Invidia Q300 is a best catback exhaust for Civic SI. 1. It's beautiful. Muffler looks gorgeous (even with stainless tip). 2. It has optimum size (66mm inner diameter) - which is enough for most modified SIs (to gain hp). 3. It sounds just awesome. Sporty. Moderate loud. 4. Value for money. Also very good.

  • 5

    q300

    Posted by Joshua Vang on Feb 24th 2018

    BEST QUALITY for exhaust ! AND EVEN BETTER WAS FAST SHIPPING!

  • 5

    Best buy for sure

    Posted by Unknown on May 15th 2017

    Recently purchased for my FA5 Civic SI. Absolutely love the exhaust! Fitment was perfect and install was fast and no nonsense. Tone is great, a bit deeper than stock and nice and quiet when cruising through the neighborhoods. Customer service was a 10!! Fast shipping and fast response on questions and concerns. Mike was a huge help. Not to mention prices were the cheapest around...

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