COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017

COBB: 891001
CJ's Low Price:
1508198400 44282
While you're under the hood installing your new rear motor mount, pick up and install COBB's down pipe as well for some extra power and performance!
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COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017
COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 Play COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 Video 1 Play COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 Video 2

Product Description

COBB Rear Motor Mount for all 2013, 2014, 2015, 2016 and 2017 Focus STs and 2016-2017 Focus RSs.

Stock engine mounts tend to allow wheel hop and engine movement, two unwanted occurrences while enthusiastically driving your beloved 2013-2017 Focus ST or 2016-2017 Focus RS. The COBB Rear Motor Mount incorporates a unique bushing, specifically designed and engineered to improve traction without harshness.

This motor mount is made from 6061 billet aluminum with zinc hardware for an impressive look and a reliable, strong construction. The COBB Rear Motor Mount is the best way to minimize engine movement, improve traction, and reduce wheel hop without major impact to NVH.

Typical bushing design will rattle your teeth and bones when your Focus ST or RS is idling or during heavy throttle input. This COBB Rear Motor Mount implements unique voids and recesses that are custom molded into the brawny, 85A durometer bushing to further aid in vibration absorption.

Reduce engine movement and help in getting all the power to the ground with this upgraded, strong rear engine support. Machined 6061 billet aluminum construction makes you sad you have to hide this attractive new mount, but with less noise, vibration or harshness you will surely be smiling wide.

COBB is an automotive engineering company dedicated to developing solutions that increase the driving experience and vehicle performance. COBB approaches design by taking the entire vehicle-platform into account as a complete system. Their premium value products are professionally engineered, thoroughly tested and backed to make sure that they meet and exceed customer expectations.

Order a COBB Rear Motor Mount for your 2013, 2014, 2015, 2016 or 2017 Focus ST or 2016-2017 Focus RS from CJ Pony Parts today!

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Focus Applications

This product will fit the following Focus years:

Product Reviews

Write a review
COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 is rated 4.7 out of 5 by 94.
Rated 5 out of 5 by from Great build, great price I've had this on my gen 2 MS3 for almost a month now. So much better than oem! Shifts are smoother, no more knocking noise when slamming through the gears and the torque steer is greatly reduced (I'm sure replacing the passenger mount would pretty much do away with it). There is more NVH but for me it's only been in a small portion of the rpm band (1700-2400) and it's not really bad. I actually like the noise. Install was super easy. Conclusion: If you want your car to shift the way it should have from the factory, get more power to the wheels and still have a comfortable ride I would highly recommend this mount.
Date published: 2015-01-19
Rated 5 out of 5 by from Noticeable difference! Probably took me about 30min to install - most of that time was spent trying to get the transmission bracket bolts to budge ... whoa! The COBB mount went in much faster once the transmission bracket was out of the way. If you don't have ramps already for your MPS, double check they'll fit! I bought some ramps but because the front skirting is so low, I couldn't actually drive up them. And as everyone else has noted, you do feel more vibration at idle but that's the trade-off I guess. I'm happy with the overall change in the 'feel' of my 2006 MPS.
Date published: 2016-06-08
Rated 5 out of 5 by from Worth it's weight in gold!!! Only had this part on for about 75 miles and it is amazing! Zero wheel hop, zero torque steer! I haven't noticed any extra noise or vibration ( aside from the very little that the turbo back exhaust causes) in the cabin at all so, my guess, for the guys that were having a lot of issues with it probably just cranked down on the bolts without the proper torque settings or, forgot to re-tighten the bolts after a couple days of driving (just a guess). Honestly, with all the upgrades I've put on my sweet girl STella, this one is by far the best! Worth every penny and then some. Great job, once again, to COBB for producing another extremely high quality part.
Date published: 2016-04-02
Rated 5 out of 5 by from Amazing Product Despite the manufacturing issue with the durameter sizing which was fixed, a phenomenal product. With the stock mount, there's extreme amounts of wheel hop, which is 70% gone when this mount is installed. The rest of the hop should be removed when the other two side mounts are installed, although they are unfortunately sold another site. Also, with the stock mount, torque steer is insanely high, although with the new'll be asking yourself what torque steer even is.
Date published: 2014-04-23
Rated 5 out of 5 by from Great Upgrade! I know that this product is intended for the ST, but when I started getting �the bang� in my Naturally Aspired 2013 Focus SE, I decided to upgrade my mounts. I got a TTR upper mount first. It fixed some of the issues, but there was still some wheel hop and the bang was still there. I bought the Cobb mount, problem solved. Wheel hop totally gone, no bang whatsoever, it even reduced the vibrations I was feeling after installing the TTR upper mount. For those of you not 100% satisfied with the Cobb mount alone, get the TTR Upper one too. Together they are awesome! Great Product!
Date published: 2014-04-23
Rated 5 out of 5 by from Feels like a whole new car. Finally the way I want it! Have had this on for about 3 weeks now and every time I drive the MS3 it feels like a new car from what I remember. Rumbles a bit more, but just enough. Feels much more connected to the ground. Torque steer 80% reduced. Wheel hop 70% reduced. I really enjoy driving the MS3 again now (to put this in perspective, the MS3 was my backup car for my 911. I just sold the 911 and told my wife I was going to put a few upgrades in the MS3. Sure I miss the 911 some, but have really been enjoying the MS3 with this upgrade much more than I thought I would). HIGHLY recommend this upgrade for anyone with a MS3. Slightly rumblier, but totally driveable like that.
Date published: 2016-03-11
Rated 5 out of 5 by from Must have Prior to installation (stock engine) upon hard acceleration and shifting gears there was a noticeable "clunking" noise that was unnerving. The stock mount is inadequate and is made for comfort and not performance. The Cobb mount solved that problem and now we have solid shifts and the "clunking" noise is gone. However, we do have more engine vibration felt in the car. This is a small price to pay for such an amazing "Bang for the buck" Bolt on! I rate it as a MUST HAVE
Date published: 2014-04-10
Rated 5 out of 5 by from Quality part I was told after buying my car that the stock RMM in the 2013-14 ST was not the greatest. After doing some research, I finally bought my COBB RMM and installed it 3 days ago. This removal of the stock one was super easy. When I got to installing the new one, I had a hard time accessing some of the spaces to put the bolts back in but other than that it was super easy. I started my car up and definitely felt the vibration of the engine but I was told to give it some time and that would get a little better. As for the wheel hop... there is NONE! It took care of my problem in first and second gear where my car would jump like crazy. Everything feels a lot stiffer now too.
Date published: 2016-02-02
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Product Questions

Would this product void manufacturers warranty if installed?

Asked by: Bret032
Unless the product in question is directly responsible for an issue, your warranty should remain intact. Read up on the Magnuson-Moss Warranty Act for more details.
Answered by: rk cjpp
Date published: 2017-06-16


Asked by: stlovva
Answered by: CJPP Dave
Date published: 2017-03-07

Hi there , will the cobb rear engine mount fit the MK£ Focus ST Diesel 2015

Asked by: Steveo131164
The vendor has not provided any information regarding cross-fitments of this part to any other model then what is listed.
Answered by: rk cjpp
Date published: 2017-01-13

Hi I'm from South Africa and would like to know how do i order and pay for the item I'm wanting,what is the process

Asked by: Rishaan
To get a shipping quote and total price, add the item(s) to your shopping cart and then proceed to checkout. In checkout, fill out your address info and scroll down to see shipping options and costs to your area including any import taxes and duties.
Answered by: rk cjpp
Date published: 2016-09-21

Does cobb RMM fit on the 2013 Focus mk3 NA 2.0 hatchback (170hp)?

Asked by: Frank168
The vendor has not provided any information regarding cross-fitments of this part to any other model then what is listed.
Answered by: CJPP Dave
Date published: 2016-08-29

Just recently put this mount in on my 2015 st. I'm hearing rattling coming from the mount but I've tightened everything up twice. I know there's supposed to be vibrations but not rattling. Maybe I did something wrong? 

Asked by: Kevnip
It could possibly be something else like the exhaust, or heat shields.
Answered by: rk cjpp
Date published: 2016-03-17

Had first engine bang in First Last night, I have a 15 ST is this still Better than the improved rmm ford installed in the 15's? 

Asked by: daves47
Yes, this is a far better option.
Answered by: CJPP Dave
Date published: 2016-02-12

So I finally got this installed on my 2014 st, and i noticed that it has vibration around 1000 rpm, and i saw that several other people have reported this. Is this something reported alot? And does driving on the RMM help a little bit with this? Thanks!

Asked by: Al3x
That's one of the tradeoffs of a stronger motor mount - you get more power to the wheels, but a bit more vibration.
Answered by: CJ Pony Parts
Date published: 2016-05-12
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Product Video

COBB Motor Mount Rear Focus ST 2013-2017/Focus RS 2016-2017 Video Transcript
By Bill Tumas: There's no denying the Focus ST's a great performance car right out of the box, but unfortunately being front wheel drive, it's going to suffer some of the same problems that haunt many high performance front wheel drive cars. One of them is going to be torque steer, which unfortunately you really can't do much about. The other is wheel hop. The case of the Focus ST, the factory rear mount is pretty soft, which allows the engine to torque and causes a lot of wheel hop during acceleration. Ford even realized this was a problem and starting in 2014, the Focus ST received the electric focus mount which is a lot beefier, but still has some wheel hop issues. To truly combat wheel hop, you need a high performance rear motor mount, so today I'm going to show you how to install COBB's rear motor mount on our 2015 Focus ST.

Adding a stiffer rear motor mount is a great way to get rid of wheel hop. You don't want to go too stiff or you're going to add a lot of noise and vibration to the car. The COBB is the perfect choice. It's made of high quality 6061 billet aluminum, uses an 85A durometer bushing which is going to be stiff, but not overly stiff. Then COBB actually builds these unique voids into the bushing to give it just enough flex that it does the job without creating extra noise and vibration.

For this installation today: a lift or a jack and jack stands, 3/8ths ratchet, 13mm socket, 15mm socket, 15mm deep socket, T30 torx bit, 10mm allen key bit, extension, 13mm wrench, 15mm wrench, and a torque wrench.

The rear motor mount is located right up in here, so the first step in installation is going to be to remove this cover so we can access it.

The mount is located right here, this is the front of it, the rest of it is back underneath the front crossover. To get to it, we need to remove the bracket for the down pipe, additional bracket here, and then this piece here will be able to access the mount.

The next part for the bracket, you want to first start with this rear nut back here...

Now we're down to the front arm of the rear motor mount, which is held on with a bolt here, another one in the back.

The other one is in the back here, it's actually the stud we just screwed the nut off of to get the other bracket. Now there's a bolt underneath the stud.

Now we can remove the cross bolt. With that bolt out of the way now we can actually tilt the engine just a little bit, to get to this last bolt in the back.

The last bolt left now is the main bolt for the motor mount itself.

Make sure the area up here is cleaned out, now we can install our COBB mount. The COBB will be a tighter fit, so you want to work it in to get the bolt hole lined up.

Just get that hand-tight right now. With that in place we're going to reinstall the bracket that we removed.

We'll reinstall the bolt and the two studs.

We're going to torque these to 45 foot pounds.

With the bracket tight, we can install the COBB cross bolt. Should get it threaded straight by hand, then we're going to torque that to 75 foot pounds.

Now we'll go back and tighten the back bolt we installed in the first to 70 foot pounds.

Now we're going to reinstall both brackets for the down pipe and the six nuts that held them on.

Start by getting everything sort of loosely in place.

Once everything is in place loosely, you're going to tighten these two first, then tighten the other four.

Reinstall the front splash plan and your installation is finished.