2019+ Mazda 3 & CX-30 Performance Rear Motor Mount - All Models

Some may get this car for a soft luxurious ride but those that are ready for that next level of sportiness need the RMM. It adds a connection to the car that makes you absolutely fall in love with it. You can FEEL your RPMs climbing as you push the pedal making the car feel like it’s alive! Another great improvement from the RMM is throttle response and handling. With the motor/trans moving less it allows the power transfer to the wheels faster allowing for a more responsive feel to the car. The less movement also helps with handling by not letting the weight of the motor shift from side to side.

The change to steering and shifter feel was much more prominent than I expected, wow. Love love love how this makes the car drive. That said, it does make me deeply loathe my 2019 6MT hatch and the cylinder deactivation system it has. The NVH at many RPMs when running on just cylinders 2 and 3 is so harsh it resonates like heavy bass through the cabin if you have the windows closed. I'd give it 1 star based on how it makes my 2019 Mazda3 feel like a 2002 Protege5 with 100k miles of rattles, but actually I sort of love that about it. The car feels more raw, I feel more connected, and yet it still has a refined interior. Practice mindfulness, be at peace with the rattles. It's a Mazda after all.

This is one of the best mods you can get for your Mazda. Really makes you feel more connected to the car and improves the response. After 2K miles most vibrations are gone, just a little at low rpm getting off the line. Be aware though it will bring out some rattles in the cabin which I haven’t been able to sort out

This in my third performance upgrade on the Mazda 3.
The previous upgrades I made are a one piece strut bar and a front lower bar.

Compared to my 2011 Mazda 6 with a 88 durometer AWR Racing dog bone mount. The stock 2021 Mazda 3 felt lacking in the responsiveness department. I am aware that this in not solely due to the stock rubber rear motor mount.

After installing the 70 durometer CorkSport rear motor mount. The difference is amazing. The car now feels much more useable. The power delivery is much more aggressive, and quicker. The car feels more planted while accelerating. There is a more power in every gear. I can now hear the unique sound of the entire rpm band much more clearly. This is great for me to shift manually.
There is some added engine noise into the cabin as well as very very minimal vibrations. Mostly, it introduced engine noise though and not vibrations. The cabin engine noise is not just louder, it is completely changed in its characteristic. The engine sounds a little aggressive now. I quite enjoy a little engine noise in my vehicles, and this car now sounds quite nice.

Having taken out the old mount I can say that this mount is much much stiffer than the old mount, which is atrocious from the point of view of performance driving. This can easily be seen by inspecting both the mounts as well as driving characteristics introduced by installing either one of them. However, the 70 durometer mount offered by CorkSport is still a tad bit tame for me personally. I would definitely enjoy a little bit aggressive power transfer at the cost of more noise and vibrations. This though is for me personally and probably the 70 durometer mount will be optimal for when I have passengers in the car who may not appreciate a loud car.

The install was mostly very straight forward. Although the 22mm bolt did not line up with the engine brace and the engine mount from the get go. I tried jacking up the back as well, however this made the issue worse. Finally, with the front on ramps, I let the air out on both the front tires. This almost perfectly lined up the 22mm bolt holes. After pushing on the engine brace with some force I was able to line up the holes and get the 22mm bolt through. Other than this, it was a flawless install, quite enjoyable.

I should also mention, that the CorkSport mount, although slightly over engineered if you ask me, is much lighter than the bizarre stock engine mount.

I highly recommend this modification for those who don't mind minimal vibration and some cabin engine noise increase.
So far this is my favorite upgrade to the car. The front strut bar has been great too though.

Not the only thing stiff

Big things come in small packages. While this does give you some very flavorful vibrations, it’s actually very functional too. We took our 4th gen out on the Tail of the Dragon with and without this mount, and the overall difference was incredible. Faster throttle response out of turns, less engine movement, and overall better performance. The feelings between shifts feel a lot better now as well. Would recommend.