cp-e™ xFlex™ Stage 2 Ford Focus ST RMM Rear Motor Mount

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Custom Performance Engineering, Inc. has chosen to think outside the box on this and come up with a completely new design. To do this, cp-e™ carefully studied the layout of the stock Focus ST rear motor mount. Immediately after removing the rear mount it was decided that a better design could be achieved.

Rated 4.67 out of 5 based on 6 customer ratings
(6 customer reviews)

$258.99

Focus ST RMM

Custom Performance Engineering, Inc. has chosen to think outside the box on this and come up with a completely new Focus ST RMM design. To do this, cp-e™ carefully studied the layout of the stock Focus ST rear motor mount. Immediately after removing the rear mount it was decided that a better design could be achieved.

The Ford Ecoboost engine mount system contains two side mounts that provide a rotational mounting point. The rear motor mount is added to help prevent the engine from swinging like a pendulum. However, the design of the stock mount orients the bushing horizontally; allowing applied stresses to act along two planes in the bushing. These types of bushings are not really meant for this and it has been found that the rear mount may be inadequate in preventing the engine from moving.

cp-e™ has come up with a way to apply stress to the bushing in only one plane. By redesigning the whole Focus ST RMM, cp-e™ was able to mount the bushing vertically so that the pendulum effect of the engine is compressing the bushing properly. Orienting the bushing in a way that allows it to be compressed properly has allowed us to create a mount that provides a stiffer system while still using a low 65 durometer bushing.

cp-e™ goes a step further by using EPDM, a sort of rubber bushing. Urethane begins to fail at temperatures as low as 200°F and generally the bushings need a higher durometer rating to hold together. The Focus rear motor mount is a perfect example of when not to use urethane. The location of the mount allows a large amount of heat to be transferred to the bushing. EPDM holds up to this heat, and doesn’t begin to break down and fail. EPDM has a higher density than urethane, so the bushing can have a lower durometer rating while keeping high reliability and support. Why is that good? Higher durometer ratings transfer vibrations through the vehicle and into the cabin, raising the NVH (noise, vibration, & harshness) value.

To give you these benefits, the two 17.1lbs blocks of aluminum are put in our CNC machine to be whittled down to only 2.17lbs. This process takes a lot of time but was necessary to provide the design necessary for the application.

Through initial testing our mount has shown to help hold the engine properly in place while providing a low durometer bushing in order to keep the in cabin vibrations low. It is to be expected that vibrations will be added in some points of the driving experience, but this effect comes solely from stiffening up the engine mounting system.

Features

FEATURES

  1. Billet CNC construction
  2. EPDM Bushing
  3. Stainless Steel Hardware
  4. Vertically mounted bushing increase’s durability and effectiveness
  5. Stabilize the engine rotational movement
  6. Made in the USA
  7. Lifetime Warranty
Weight 6 lbs
Dimensions 12 x 6 x 3 in

6 reviews for cp-e™ xFlex™ Stage 2 Ford Focus ST RMM Rear Motor Mount

  1. Rated 5 out of 5

    Great looking strong product but produces a lot more noise and vibration than just the stage one motor mount. You can really tell it does its job as soon as you get on it the first time after the install. I am super happy with the product and the install was pretty easy as well. Thanks CP-E for another great product!!!

  2. Rated 5 out of 5

    It was an extremely well made mount and instructions where very clear. It sucks that a mod which is so well made and pretty looking is something that you will never see daily to admire it. But the car feels completely different now, i can feel a lot of vibrations but I have driven a similar vehicle with the same mount and its clear that after the mount breaks in its wonderful and does what it promised. Good job CPE, all the parts that you make are worth the price.

  3. Rated 5 out of 5

    The best mount available for the FoSt. After break-in vibes tone down and the mount performs excellent.

  4. Rated 5 out of 5

    install was easy and the instructions were clear. does what it supposed to.

  5. Rated 5 out of 5

    Near perfect. Solved most of the wheel hop.

  6. Rated 3 out of 5

    The mount itself is very well constructed and designed installation was easy except for the one torks bolt

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