CP-e RMM, genpu

Mr.Gregg

Mr.Gregg

Greenie N00B Member
Hi, just wanted to share a cautionary review of CP-E's rear motor mount for the Mazdaspeed3.

I can't find my receipt for this part, but believe I bought it approximately three years and maybe 40k miles ago. It was pretty great at first, of course interior rattles were increased over stock, but it did do a good job of minimizing torque steer as well as allowing the car to smoothly break traction without any wheel-hop or juddering. Unfortunately, that only lasted for a year or two, and I started to notice more wheel-hop, especially on wet streets. I later noticed that the bushing had cracked, which I assumed was the cause.

I've continued to drive on it with no serious issues, but ended up buying and installing a corksport RMM because most others re-used part of the factory mount, which I must have thrown away.


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I had a cpe stage one and it did the same thing pretty quickly. They talked about using a different type of rubber for the bushing in the marketing materials that apparently wasn't up to the task at all
 
Awafrican said:
Did you contact cpe at all? Parts fail, bushings dry out, surprised it happened that quickly however what's your driving habits like? Did you ever re torque it.
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No, I never contacted CPE, but probably should have. I was uncertain if this was a structural failure at all, or more of an aesthetic issue, as the product description literally says:
"This material is also extremely resilient and is able to stretch and even develop small cracks without affecting its structural integrity."

However, after removing it, I do think it was the cause of my increased wheel hop, there is a bit of play present.


This car is mostly just used for daily driver duty, but did also see occasional track days. I don't recall if it was ever retorqued, all bolts were tight when removed.
 
Contact cpe, they will replace the bushing. I’ve had mine replaced 2 times in 8-ish years. You’ll have to pay for shipping, otherwise not much hassle.


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I've gone ahead and contacted them, and have been offered a replacement. However, I've already installed a corksport RMM, so probably won't submit a warranty claim; I don't want to have to keep replacing the thing every year.
 
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