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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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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.

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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.

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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

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Installing Your Performance Rear Engine Mount

Difficulty: 1/5

1/5 Difficulty




Realy a game changer... Its day and night very good quality product. Thx to the team
Everything from the package, through the product itself and to the installation instruction is wonderful. The NVH is noticeable, yes. You can't miss it. But as a driver you connected to the car much better and the power you getting is consistent without any WheelHop. Really love it!
Best best inversion ever I don’t have to say nothing just buy it omg !!
Hands down the best value upgrade I’ve done. I love the added noise and vibration—it’s just enough and now I can hear my engine talking to me!
I was hesitant on getting this because I didn't know how bad it would vibrate. Going forward I decided if i was going to get a test motor mount I was going to get the most agressive one i could find. Why? Cause Tim Allen growl. Got the beefiest one i could find and I have been wanting to try 27WON products for so long now. Installed it a couple days ago and about crapped for how much vibrations their were but honestly I love it. It sounds so nice and to get feedback from the car is absolutely fantastic I every way. Amazing product amazing staff. I hope to see this company do more amazing things in the car scene cause they absolutely deserve it. Well done all of 27WON.
I absolutely love this motor mount in my SI. The car feels more responsive and shifts are more crisp. More importantly it lets you actually feel and hear what the car is doing. It’s not for everyone, but I really like the increase in NVH. I just got back from an 8 hour road trip in the car with two friends who could care less about cars, and neither of them found it too loud or uncomfortable. This is a must have if you want more feedback and a more raw driving experience.
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
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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