Ecotec Rear Trans Mount

Transmission & Drivetrain - Rear Trans Mount
Transmission & Drivetrain - Rear Trans Mount
Transmission & Drivetrain - Rear Trans Mount

Ecotec Rear Trans Mount

27 reviews
Regular price $99.99
  • Low stock - 6 items left
  • Inventory on the way

This is our 2nd generation billet aluminum with solid rubber bushing mounts. Using a solid rubber bushing keeps them from creating vibration like the poly mounts have from being too stiff however they still drastically reduce wheel hop. These mounts are lighter than stock and are a great upgrade. These mounts are used in the hardest launching Cobalt/Ion Redlines in our market including Ryan's 06 which has achieved 1.5 60' times and Matt's LNF, which has done 1.6 60 foots. This is a stock replacement mount, we also offer our rotated version for lowered cars here.


Will not fit 2.2L cars. Also fits 5 speed HHR SS! Will not fit on automatic cars. 


Stock 2#

Billet 1.75#

Customer Reviews
4.8 Based on 27 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • front
  • stock
  • mounts
  • engine mount
  • lift
  • bolt
  • cobalt ss
  • attention
  • stars
  • clutch
United States United States

Perfect fit and great

I ordered this mount new and paired it with a second hand but great shape front mount. The difference is incredible, there is cabin vibration but my transmission sagged close to an inch on the 130,000 mi stock mounts. The car shifts like new and runs great. I also recommend a stiff engine mount to complete the set.

Andrew N.
United States United States


I installed the ZZP front and rear transmission mounts on my Cobalt SS and I couldn't be more pleased with the results. I was originally worried about the additional noise and vibration that are noted in some reviews but when I first drove the car after the install I didn't notice any additional noise or vibrations but the nose stayed planted even under full throttle shifts. These mounts cured the off throttle rocking that really annoyed me as well. I'm really impressed with the results! The only additional vibration that I notice is when the clutch is released in first gear and I had to pay close attention to even notice it at all. I highly recommend these solid rubber mounts and they offer a vast improvement in driving dynamics compared to the stock ones. I would put these and the short throw shifter at the top of my mods list. Together they really helped transform even my pristine 55,000 mile car. Installing both of these mounts was a breeze. I did end up pulling the rear bracket down (I did not remove it completely and it has a wire connector attached to the top of it.) in order to install the actual mount and to remove the mounting bolt but everything fit neatly in place. It only requires very basic tools and a jack with two stands.

Harvey C.
United States United States

The produc is great I also purchased the front transmission mount on ebay from zzp I planning to buy the upper one

Cris A.
United States United States

Soo Much Better!

Installed this and Front Mount, the difference is crazy, you instantly feel it. The car definitely feels more solid the moment you drive it, as far as vibrations go I feel a little bit in 1st gear and I mean a little it’s not bad at all (very tolerable) and after that it’s hardly even noticeable at all. Great product (LNF 340whp)

United States United States

Improves start

Definitely better off the line after replacing front and rear trans mounts. Looking forward to replacing engine mount when back in stock.

More from Ecotec
Electronics - PCM Update
Electronics - PCM Update
PCM Update - Ecotec
12 reviews
Electronics - ZZP 1.0 LSJ PCM
from $209.99
51 reviews
Electronics - ZZP LNF Turbo PCM
from $209.99
221 reviews
Electronics - ZZP 1.0 2.2/2.4 PCM
ZZP 1.0 2.2/2.4 PCM
from $159.99
28 reviews
Electronics - ZZP LHU Turbo PCM
Electronics - ZZP LHU Turbo PCM
from $209.99
21 reviews
Electronics - ZZP LTG Regal Turbo PCM Test
Electronics - ZZP LTG Regal Turbo PCM Test
ZZP LTG Regal/Malibu Turbo PCM Tune
from $294.99
3 reviews
Recently viewed