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The mounts from Smarts4you are Polyurethane and are significantly harder than the BMS mount. There are really only three levels of motor mount: Stock, hard rubber (BMS), and polyurethane. The poly mounts should really only be used for track days/autox unless you have a knack for extreme vibration.
 

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Discussion Starter · #3 ·
Got it! There was another post with a guy making them and he redesigned his first effort with a less rigid material. I will look for that post. So have you swapped out any motor mounts to new stock ones and if so how was that feeling for the car.
 
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