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2017-2021 Civic Type R Cat-back Exhaust (FK8)

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The Team at 27WON Performance believes the first available Civic Type R stateside deserves an exhaust without compromises. No drone filled cabin, no raspy wide open throttle, no slip fit joints. A TRUE 3” exhaust system without restrictions.

We did just that by combining the best features and materials to create the most unique performance exhaust for the 2017+ Honda Civic Type R. Our design is about performance and exhaust note with zero compromises. Our unique catback system combines three resonator styles to create an exhaust system that growls when you mash the throttle but purrs during the drive to work and long road trips.

The 27WON exhaust system is also the only system with no neck downs. This means 3 inch from end to end which results in the the absolute most free-flowing exhaust you can get for your turbocharged K20C1.

Click to hear audio clips of this system

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The single oval resonator features two designs inside; an absorption resonator and expansion chamber resonator. These act to remove low and high frequencies and allow the exhaust gases to pass straight through.

The curly pipes on the side have a very specific task: to cancel out unwanted drone at specific engine RPM ranges. The two pipes each affect a specific RPM window; ~2900rpm and ~4000rpm. These points had excessive drone in the Type R that we wanted to get rid of. These side-branch resonators do not affect power or peak volume output. They only serve to cancel out specific unwanted frequencies that create that awful in-cabin drone.

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Increased flow is always a key to enhancing the performance of your engine. We increased the exhaust piping diameter from 2inch up to 3inch (76mm) to increase maximum exhaust flow and power. This results in more than a 100% increase in cross-sectional area to support future power modifications.


What’s a performance exhaust without power? Over a 7 run average compared to the OEM exhaust, we saw a peak increase of 16wTq and 11wHp with a measurable gain over the majority of the power curve. We are confident we got all the power to be had from an FK8 exhaust system.

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Every exhaust has connections and how these connections are made varies from basic leaky slip joints to the best option, v-band flanges. Every connection except to the downpipe utilizes a precision-machined v-band flange connection. Why?

V-bands give durable and reliable sealing with lightweight construction compared to thick bolted flanges. Additionally, there is no gasket to degrade or lose. This is just another way we REDEFINE.

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There are absolutely no compromises with the 27WON Performance Exhaust, not even the hardware and accessories. Every exhaust system comes with stainless steel t-bolt clamps and multi-layer SS gaskets where needed.

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The Type R signature triple tip design was honored with the 27WON Performance Exhaust, but with a twist of REDEFINE. Instead of a smaller center tip, we opted to make the center tip the focal point with a diameter of 112mm (4.40inches) and a 100mm (3.90inches) tip to either side.

Adding a level of performance and sophistication, each tip is a polished 304SS dual-wall design that really complements your Civic Type R.

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A critical design element we would not compromise on was the connection between the front-pipe and the remaining exhaust. The OE necks down to 50.5mm (2inches) here and many performance exhausts on the market do the same.

Our exhaust maintains a true 3" inches (76mm) from the downpipe to the tips with our included frontpipe.

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Every 27WON Exhaust System is crafted from T304 Stainless Steel that is CNC mandrel bent and precision TIG welded for a long lasting and durable performance part.

a full complete upgraded exhaust system for the FK8
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More power and more savings! Add even more power to the base cat-back exhaust when you bundle it together with our 27WON High Flow Downpipe specifically designed for the Type R. We're talking about gains you can feel on the street and on the track.

Ok, what about the savings part? When you purchase these parts together, you can save $92.71 while having the sickest sounding exhaust on the planet and the only full turbo-back system on the market from a single brand.

the largest diameter exhaust for the fk8

We understand that poor fitment and installation is frustrating, that’s why we have designed the 27WON Exhaust System to fit and install without issue AND does not require the modification of any OE parts.

Download the FREE Dozuki app for color step-by-step instructions right from your mobile device.

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Find out about our approach to this truly unique catback exhaust system. The OEM Breakdown Pt. 1

Discover our creative design process. The devil is in the details Pt. 2

Hours of dyno testing to get results. True bolt on horsepower and torque Pt. 3

27WON completes the package with the release of the High Flow Type R Downpipe. How much power did you say!?

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  • Installation of the 3" FK8 Catback exhaust with an aftermarket high performance downpipe could increase noise, harshness, vibration (NVH) and exhaust volume. Some people may find a full turbo-back exhaust too loud for their tastes. Give us a call, we are happy to talk you through this and make sure you'll get an exhaust system you'll love.

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  • Limited Lifetime Warranty
  • Designed in Vancouver, Washington, in the Pacific Northwest
  • Free Shipping in the Continental U.S. and Discounted International Shipping
  • Complete online installation instructions through the Dozuki App: Search “Performance Installs”
  • Install app downloads can be found here Play Store and iTunes

Installing Your Performance Cat-back Exhaust System and Downpipe

Difficulty: 3/5

3/5 Difficulty




You wont be disappointed.
I'm a pure skeptic, very picky and have spent 3 yrs shopping and researching aftermarket exhausts from all the usual suspects, Greddy, skunk2, invidia, etc. To the higher end Fujitsubo, Tomei, spoon, mugen. Every exhaust fell short of quality and sound expectations. Until 27WON. Their build quality, fitment and sound are better than any other competitor. And the price is just the icing on the cake. Perfect fitment and sound.
Packaging is fantastic, the overall quality of the exhaust is amazing, beautiful welds! Install was extremely easy and it sounds awesome. Couldn't recommend this exhaust more, well worth the price!
Absolutely amazing exhaust system from 27WON! Have been a big fan of them since they started thanks to my buddy! The fitment is absolutely perfect! The welds are incredible, and the entire piece is very solid. Perfect for daily driving and some track use. Exhaust isn't too loud but isn't too quiet either. 5/5
So....where to start!? Excellent customer service, that's where we're going to start! These folks are flat out amazing! I reached out on IG on June 22nd at 3:30PM, placed the order that day around 6PM! They had it shipped out to me the following day and it made it to my doorstep in 2 days!
Let's talk about the exhaust itself! This thing is so nicely done its not even funny! From the front pipe all the way to the triple tip finish! It complements the look of the car! Its an absolute work of art! Absolute shame that its hidden under the car! It sounds amazing as well! Granted I have barely had it on the car for a week but the sound is amazing! It is nice and quiet when you're cruising and it gets loud when you get on the throttle! The sound is nice and deep, no drone, no rasp, nothing! It is extremely unique and that's one of the things I love about it! I had my dealership help me with the installation and they were amazed with the fitment and the quality, sound and how easy it was to install. They loved the detailed instructions and it made it for an extremely painless process to get it done!
I look forward to getting my hands on more products from 27Won! Looking at that intercooler!
Loved the look and the welds are amazing!!!! The sound is great not annoying and loud like I seen with other exhaust. When on the hwy the car is quiet like before, quiet when at a stop until you step on the gas. The fitment I would give a 4.5. The rear of the exhaust tips with the bracket they provided, it sits close to the holding pin under the car so it is creating a rattle when going down hills or hard accelerations. Will be trimming a few things under the car so it wont rattle anymore but I still highly recommend this exhaust. I may have installed it incorrectly but all the pieces still perfect so I do not know what else would cause it to be that close. A true 3in all the way through! Recommend installing with a lift, I did it with jack stands but it was a pain getting the front pipe out with limited clearance.
One of the best exhaust out for the fk8 imo, the vbands, the welds, the craftsmanship of this exhaust is A1 very happy with this exhaust installing was a breeze with the vbands, everything lined up nice and perfect, the sound is amazingggg I love it, sounds like no other exhaust out for the CTR , worth every penny and very fast shipping!
This FK8 exhaust is definitely 100% worth the wait and it’s worth every penny fitment is phenomenal just after installing the front pipe in the mid with the resonator and then installing the rear exhaust section the center section with no hangers perfectly fit in without a second set of hands to install it.
I was amazed how easy it was to install even in my garage with jack stands. The V band clamps are awesome and is a work of art underneath the FK8, it is a shame that no one can see it unless you crawl underneath the car or have a set of mirrors I’m very excited to show this off during the next round of car shows here in the state of Washington and I highly complement 27WON on the sound and pure excellence on this exhaust fantastic job and can’t wait to see the inner cooler
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2017+ Civic Type R

***The addition of an aftermarket downpipe will further heighten the Noise, Volume, & Harshness (NVH) of a FK8 exhaust system. Some people may find a full turbo-back exhaust too loud for their personal taste***