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2016-2021 Honda CivicX Rear Motor Mount

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In the midst of power upgrades becoming more prevalent; it is easy to focus on horsepower and torque figures. However, your numbers don’t mean much if you can’t get the power to the ground effectively.

Enter the Rear Motor Mount…the performance part you didn’t know you needed.

100% of the power your Honda Civics' engine creates must be applied to the axles/wheels/tires to get them rolling and your Civic moving; but what holds the engine in place? The rear engine mount (along with the other two mounts) have the demanding job of keeping the engine in your Civic SI in-place. Unfortunately, the OE engine mount quickly loses effectiveness as the engine power output increases.

If you find yourself fighting for traction and would like to improve throttle response then look no further, the 27WON Performance Rear Engine Mount is the performance upgrade just for you.

Click here to see the differences between stock and 27WON engine mounts

Click here for a step-by-step install video of your new engine mount

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27won redefine design subheadline

Compared to OE and other options on the market you may notice something is missing…or is it? With our design less is more; which is why our mount utilizes only one polyurethane isolated mounting point.

The mounting point between engine and RMM has a primary motion and secondary motion.

  • Primary = rotational
  • Secondary = up/down

  • The polyurethane mounting point on the engine reduces the primary rotational movement of the engine while still allowing a small amount of movement due to the polyurethane compressing.

    The rigid mounting point connected to the chassis sub-frame eliminates the up/down motion that the engine follows while the engine rotates. This eliminates associated secondary vibration and thus reduces NVH. Check out the blogs below for more details.

27won design strength subheadline

In an effort to reduce weight and maintain strength, the 27WON Performance RMM utilizes an “I-Beam” style design (very similar to high performance connecting rods) to connect the two mounting points. This design provides a reduction in weight without a significant sacrifice in tensile and compressive strength. The weight savings add up to ~1/2 lb vs OE.

27won durometer hardness subheadline

A noticeable bump up in performance (street) or leave it all on the track (race). The 27WON engine mount is available with 2 options for durometer hardness so you can select a mount that best suits your driving profile. Our 70A street gives a big drop in torque steer while being more civil in regards to NVH as compared to our 90A race. Our 90A race mount is for for those who put outright performance over comfort and can accept the extra NVH that gives them maximum performance.

read the advisory sub headline banner
  • Removal of aftermarket front pipes required for install
  • Motor oil can degrade and cause premature wear on certain components such as the Polyurethane bushings found in Rear Motor Mounts. Please be advised that if you have an oil leak present, your Rear Motor Mounts durability and longevity may be impacted if oil gets on these parts. In particular, watch for valve cover leaks

high quality materials subheadline

The steel sleeve within the polyurethane pucks is manufactured from 303 stainless steel for strength and corrosion resistance. The twin poly bushings are custom molded from a proprietary polyurethane blend. This material is chosen because it offers excellent performance in dynamic loading, shock absorption, and water environment, the exact conditions your engine mount will be subjected to.

27won billet or cast subheadline

The body of the 27WON Race RMM is manufactured from two types of material depending on your choice. 6061-T6 billet aluminum for superior strength and weight or die-cast aluminum for a more budget friendly version. Both versions utilize our same CAD design to ensure a mount that will perform for your 10th gen Honda Civic.

NVH subheadline

Noise, Vibration, & Harshness (NVH) is an evaluation of the various irritants that can be transmitted through the vehicle into the cabin and directly to the driver and passengers. OE engineers and designers spend countless hours reducing/eliminating NVH from vehicles, however, this sometimes comes with a compromise in performance and vehicle feedback. Not all NVH is created equal, an OE designer may consider turbo noise to be unwanted NVH, whereas a performance enthusiast may consider it a desired sound.

At 27WON when designing performance parts that may affect the vehicles NVH we strive to find the right balance of performance improvement and NVH increase. Ideally, we are able to create a performance part that does not affect NVH, but that is not always the case. Examples are exhaust systems, intake systems, engine mounts, suspension components…etc.

With the addition of a 27WON performance engine mount increased NVH will be an inherent part of the upgrade. While we do our absolute best to deliver a mount that works great and feels amazing some customers may find the higher levels of NVH to be too great. It is our guarantee that 100% of customers will love this mount. If for any reason you have any concerns with the mount simply reach out to us and our team will be sure to find a solution that works for you.

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The OEM break-down
Your Vote Matters

27won service and support subheadline

Installing Your Performance Rear Engine Mount

Difficulty: 1/5

1/5 Difficulty




I absolutely love this part. The NVH is a little rough at first, but after only 160 miles I can already feel that it is not as hard of a vibration.
The car shifts way smoother and it has completely eliminated the bouncing affect you would get if driving in first at a low speed. Like in a parking lot when you would let of the gas if wanting to slow down with out putting in the clutch. It’s gone completely.
Also the car goes into each gear way smoother. Wheel hop is non existent now. At least it is so far.
If you don’t mind some vibrations (almost like if you had exhaust) that’s what it sounds like inside the car; then I recommend you get this.
I had a few questions about the part so I called and I still can’t believe that Vincent himself answered and was very helpful with all my concerns and questions.
If you’re thinking of getting a mount for your civic then you’re in the right place, just buy it and be done with it. That’s what I did. I looked at it almost everyday for a month and finally just did it. Wish I would have gotten it way sooner.
Cold air intake is next, then turbo upgrade, then down pipe ,and so on Haha. Thanks 27won for your help!
If you don't got it.
Get it!
I’ve never driven a car with a stiff rmm before. The very first time going into first gear was a little intense, but overall the car feels extremely solid. First and second gear especially feel so much more stable, shifting is smoother, and I rarely get that random crunchy shift. There is some drone from the vibration but it is only “loud” below ~2000rpm, otherwise it sounds awesome during idle and driving. If you want a raw manual driving experience I’d put this at the top of the mod list!
Wow!! Night and day compared to stock rmm. Mount keeps everything in its place. Shifts feel crisp. Initially engine vibrations are there but not bad at all. Product quality is amazing!

Everyone should buy one. Treat yo self.

Love Guat.si
Expect that vibration from your engine to be with you at all times in the cabin. With that being said, if you have ever modified any Honda extensively, you can live with that noise. It is much louder, but shifts are butter smooth and wheel hop is non existent.

This should be one of your first upgrades if you plan on replacing the stock Front-Pipe. It is a very tight install with the stock front-pipe. I imagine with a larger Diameter one like I ordered from you, it would be a very difficult install.

Do you want to have little or no noise, or do you want your car to shift like it should with noise? You decide. I am glad I went with this product overall. The lady doesn't like it, but it is not her car ;). BTW, this has been the best customer service I have ever experienced in dealing with car parts. Thank You Vincent!!

I can't wait to install the other parts I have ordered. I will review as I install. Cheers!
2017 Si
Wow 27WON you really knocked it out of the park with this one! Install was super easy and you will notice an immediate difference from the very first moment you start the car up. The engine noise is transmitted more into the cabin, which is good for me when I am at the track because I can now hear the engine is approaching redline. No more excuses for bouncing off rev limiter by accident! The additional NVH in all honesty is not that bad. I have installed poly engine mounts on previous vehicles, so I was expecting much worse. Once the engine is fully warmed up its hard to tell much a difference at all from stock, except a tiny bit of vibration felt through the pedals. Another side benefit I noticed was a slightly stiffer brake pedal feel. The mount has only been installed for a week and things will only get better as the mount breaks in. Stop overthinking things and just get this mount already. You will thank me later.
Just installed my rmm, what a difference! Car feels well balanced now and shifts smoother. Also no wheel hop ! Great product so far will look into other products from them.
This motor mount is amazing. You will experience increased NVH but the car will feel so much more put together. The shifter is smoother and the power feels more balanced. Love this mount. Highly recommend.
2018 Si, MeanGreenSi.
27won Catted FP/DP and RMM installed at the same time. Damn the car feels amazing! The take off is smoother then the Hasport I had. You do feel more nvh which I like, it’s not for everyone. But your either spinning or going, no wheel hop at all. Car feels amazing and sounds amazing, I’m still on the stock catback too. This motor mount made a huge difference. More pics and info on the civicx forum under MeanGreenSi. Hit me up if you have questions and you want to here from a customer instead of employee. I will check 27won first for upgrades from now on.
This just amplify the sound that was already there in a good way! Everyone needs to buy this mount. I can tell any mount that’s softer than this one is junk. This mount completely changed my car in the direction that I want. I can shift easily now no issues. My car only has 2500 miles and I always would grind slightly shift gears like the transmission must of been movement in between shifts. I’ve owned a ton of cars and never had that happen before. This mount has fixed it completely.
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All 2016-2021 Honda Civic trims including 2.0 NA and 1.5T equipped models
Including Sport and SI models
2017-2021 Civic Type R
***NOTE*** NVH will increase over OEM mount, the increased levels of NVH may or may not be suitable for some customers