Rear motor mount

[akabickle]

Id like to take a poll. I guess my first upgrade is going to be a rear motor mount. Looks like CP-E is the most popular. But what about the CorkSport inserts? I DO NOT want alot of vibration at idle but i want to feel the gain of having one.

Is there enough gain out of a 60 duro RMM?
Would the inserts be just as good?

Thanks guys! Ill order as soon as i get everything sorted out

[treyclash]

Street Unit seems to have a decent one but no first hand experience and so does trz

[indianaryan]

You will use the search button because there are tons of threads on this topic already.

[ckahler666]

+1 for TRZ

[mghtymouse380]

TRZ is awesome that is what I have on but you get some vibes. But it is awesome.

[charlesfist]

Look around, theres a lot of info on this..

Heres my quick take.. (Gen 1)..

I've had the CS inserts first (for almost a year), then a CPE 60, and then a CPE 75.

Inserts are best for NO increased vibrations and a stiffer feel.
The stiffness seems to get less over time (i would say this for all mounts i've used actually).
For me it was about 10 months where i realized i needed something better than inserts (seemed to be getting softer).

CPE 60 was quite a bit better than the inserts (comparing insert stiffness after being used for almost a year).
A little vibs initially, which settled down to nothing over a few hundred miles.
I broke this, so went with the stiffer one.

CPE 75 was a litlle better than the 60.
Obviously more vibs than both (which is really not that much), but down to minimal after a few hundred miles and still a pretty good stiff feeling.

FYI, my car is my DD and a/c is almost always on.

I would say that for the price those inserts are really good. I was low on cash when i first started with my car, so went with them and an intake, instead of just a RMM. I never regretted my decision.

[cesaros]

CS inserts tend to increase vibes a bit.

TRZ is by far the best RMM, but it also the harshest. It has a 0% fail rate, and has the best design for strength.

Street Units RMM is a bad design because its a 2 piece.

CPe is good but ive seen the rubber bushing begin to tear after only 8 months.

Since you don't want vibrations, CPe is probably your best choice. But if you can handle a little vibration at idle, then TRZ is miles better than any other RMM.

[akabickle]

Originally Posted by cesaros CS inserts tend to increase vibes a bit. TRZ is by far the best RMM, but it also the harshest. It has a 0% fail rate, and has the best design for strength. Street Units RMM is a bad design because its a 2 piece. CPe is good but ive seen the rubber bushing begin to tear after only 8 months. Since you don't want vibrations, CPe is probably your best choice. But if you can handle a little vibration at idle, then TRZ is miles better than any other RMM.

the bottom 2 replies were exactly what i was looking for!! thanks guys. I was afraid the inserts would wear out. I do not want vibrations and i guess after a few hundred miles the 60 duro would be the best for me. I Always drive with the AC on especially now in the oklahoma humidity. looks like ill go with the CPe. thanks guys for help with my first mod!

[dr_banano]

can any body link me to to the trz rmm page
thanks

[redblur]

Originally Posted by dr_banano can any body link me to to the trz rmm page thanks

Found it:

Protege Garage - TRZ "Dog Bone" Rear Motor Mount - Mazda3 and Mazdaspeed3

Anyone know what the torque specs are on the bolts when retightening?