Ford spends lots of money to address vibrations in their cars. FYI, 337K US Fiestas were sold in '14 to '20 and @ $20 per pair (1/4 of parts price retail) on the car just the cost of these damper parts alone would be about $6.74 Million not counting other costs involved just on the American cars. I'll bet they were on all models in the world the cost would be in the $25 million range or more for these parts. No car maker spends that much money unless it is needed by the developers to meet internal or external standards. I'm sure Ford would have liked not spending the money so it must have been very important to Ford to have them on the cars. Removing something that you don't know what it does makes little sense to me. If you want to keep vibrations to a minimum as designed, leave the dampers alone, they are not hurting a thing and keeping what Ford designed them to dampen dampened. If "nobody" can tell a difference with removal it is entirely probable the tuning on them could be very low frequencies masked by road vibrations, subsonic or even high frequencies to dampen engine harmonics for example. I can't find info on what they are dampening. Because you cannot butt feel what it's doing does not mean it does nothing, I trust Ford did not spend many millions for devices that do nothing.
