Invidia N1 Exhaust System 2012-2015 Honda Civic Si - (Coupe & Sedan)

(9 reviews) Write a Review

4.9 Store Rating ⭐⭐⭐⭐⭐
✅ Free Shipping over $150.
✅ Package Loss, Damage & Theft Protection.
✅ Earn Cashback on every order $$$.
✅ Buy Now Pay Later Klarna, Afterpay.
✅ Google Trusted Store.

Coupon Code = "HMROCKS" ❄️

Calculated at Checkout
  • Invidia N1 Exhaust System 2012-2015 Honda Civic Si
  • Invidia N1 Exhaust System 2012-2015 Honda Civic Si
  • Invidia N1 Exhaust System 2012-2015 Honda Civic Si
$577.48 - $763.42


Invidia N1 Titanium Tip Exhaust 2012-2015 Honda Civic Si

The Invidia N1 Titanium Tip Exhaust System for the 2012-2013 and 2014-2015 Honda Civic Si Coupe and Sedan HS12HC4GTT / HS12HC2GTT. These exhaust systems from N1 exhibit the same characteristics that N1 racing series in japan is known for, sound. The small race canisters reduce weight in the rear while also making sure that full maximum airflow is extracted from the downpipe by utilizing a high flow race muffler. This exhausts produce very sporty sound and look aggressive exiting the rear bumper. This system is a 2.75 inch mandrel bent cat-back / full-exhaust system and well known for good fitting and high quality exhausts from Invidia. All you need to do is simply bolt on this exhaust and off you go. Everything is meant to attach to the oem system and points with ease. We also now carry the 3 inch - 76mm version of this exhaust as well.

"The Invidia N1 is a super high quality, very sporty sounding exhaust that produces a strong sound and is the most lightweight type exhaust you can buy. We carry the 2.75 inch and 3.0 inch variations, select your size and order with easy click and go ordering." -- HARDmotion


High Quality Mandrel Bent stainless steel piping
Burnt Titanium Tip
High Flow N1 Race Muffler

Part #:

4 door sedan = HS12HC4GTT (titanium tip 70mm 2.75 inch)
2 door coupe = HS12HC2GTT (titanium tip 70mm 2.75inch)
4 door sedan = HS12HC4STT (titanium tip 76mm 3.0 inch)
2 door coupe = HS12HC2STT (titanium tip 76mm 3.0 inch)


2012 2013 2014 2015 Honda Civic Si Sedan or Coupe k24z7 (different part #'s)


FREE Shipping USA 48 States


View AllClose

9 Reviews

  • 2
    Too Loud for me

    Posted by Ian on Aug 25th 2022

    This exhaust gives me a headache to drive, even with the silencer in. The exhaust works great, is easy to install, looks great. I did not realize how much louder my car would be with this exhaust, and if I had I wouldn't have bought it.

  • 5
    great product

    Posted by scott on Apr 14th 2022

    easy to install all parts were in the box sounds amazing just what i wanted

  • 5
    Invidia Exhaust

    Posted by Alex Putman on Dec 22nd 2021

    I ordered my exhaust in September and didn’t receive it until the second week of December, this was due to supply chain delays. Other than the long time for it being made, it sounds amazing. If you’re looking for an exhaust that doesn’t NOT sound like a pop can this is the one. Well worth my money!

  • 5
    N1 exhaust

    Posted by Anthony Wilder on Sep 17th 2021

    I accidentally order the wrong exhaust without knowing but the exhaust arrived a lot earlier then what was said and the exhaust I got ended up being amazing!

  • 5
    Good quality

    Posted by Carlos Martinez on Sep 14th 2021

    Exhaust sounds nice and loud, but clean. Shipping was also faster than expected

  • 5

    Posted by Joshua on Jul 27th 2021

    The shipping took about a month but it was well worth the wait. The welds look great, install was easy and the sound is deep. It is definitely a loud exhaust so if you want just a minor sound Improvement this may not be for you. I added sound dampening throughout my trunk and backseat which I believe prevented drowning through most of the RPM range.

  • 5
    Amazing sound, amazing service

    Posted by Luke M Tweddale on Jan 23rd 2021

    Delivered on schedule as promised, great communication during the process, product arrived correct and undamaged, and now my Civic Si sounds like thunder! Thank you Hardmotion

  • 5
    Great Exhaust, Fast Shipping

    Posted by Zach on Jun 12th 2020

    I was looking for a louder exhaust with a great deep tone. Some of the other exhausts didn't seem like they compared to this for the price. Definitely louder in the cabin, but it's nothing like a muscle car or motorcycle, so it's relatively manageable. Great build quality, too. I purchased this exhaust and it arrived here three days later. Thanks for the fast shipping and selling a great product.

  • 5
    Awesome exhaust, great sound!

    Posted by Jarah on Sep 19th 2017

    Definitely super sporty sound (loud) and smooth and aggressive sounding. Very lightweight, great welds, beautiful looking on the car. Definitely added some more power you can feel and the car doesnt have that crappy stock zingy sound anymore...totally different beast now. Thank you hard motion for the fast shipping

View AllClose