Fiesta ST Rear Motor Mount
The Damond Motorsports Rear Motor Mount is a must have for any Fiesta ST enthusiast wanting a more connected driving experience. Not only does the mount drastically reduce engine movement, it also helps to lessen wheel-hop, and improve both clutch engagement and shifting feel.
Taking what we’ve learned on the Focus and Mazdaspeed platforms, we designed this mount to strike the perfect balance between racecar and daily-driveability for the Fiesta ST. Nothing harsh enough to rattle your teeth out, but a little stiffer and less movement compared to the competition.
We utilize off-the-shelf bushings sourced from a market leader of polyurethane bushings, so reliability with longer than OE mount service intervals are to be expected. The bushing pairs themselves are specified at different durometers, allowing both high and low frequency vibrations to be absorbed, throughout most of the RPM range.
Available in Black anodize with Black or Red bushings.
Note: With this mount there will be added NVH over stock, as well as a slight break-in period for NVH to settle.
Was very impressed with what I saw in the box. Took it out and really could tell some thought went into the product it was almost to bad it was being installed under the car were it couldn't be seen it was so pretty. Application was super easy and just now waiting to get my car back to test it out as it was just one of many mods that were being installed.
The part fits perfectly, no problem with installation, the machining of the aluminum is superb, quality of the part is top notch as we expect from Damond.
The downside is that the bushing they picked is WAY to stiff, the NVH under 2000rpm is just unbearable. Idling now feels like I've a Harley under the hood. and every time I accelerate from a stop, that low rpm vibration rattles all my interior pieces.
In the end I had to drill so many holes in the bushing to reduce the NVH, I drilled out almost 60-70% of the material and had to cut up the ribs between adjacent holes in order to bring the NVH down to acceptable level.
I really don't see why you need such a rock hard grade of bushing, it's not like we're making 400hp+ in our cars.
This part is more for if you're making huge hp with slicks in a full race car.
The guys at Damond have done it again! I have nearly 15k miles driven on their RMM -between prototypes and final production. It performed flawlessly at whatever I tossed at it. The stiffness allowed quick, confident shifts while maintaining great feel and traction control. To go along with three autocross events on the RMM, I drove the FiST to the tune of 350 miles weekly in the first month after the install. I then put the RMM through it’s paces by heading out on a 3500 mile road trip. There were zero issues with NVH while cruising at highway speeds and the same confident, quick shifts when I found myself in Mexico. I would say the mount broke in and settled down the NVH about halfway through the trip and has remained consistent since then.
I’ve continued to put 300+ miles on weekly and I don’t plan on switching out the RMM any time soon.