Quote:
Originally Posted by Mountain
I thought the FE4 suspension already had most of this?
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The castings are all the same, the entire point is bushing changes. FE4 bushings are stiffer than FE2/3, but the FEA's are stiffer yet.
As an example There are 3 sets of part numbers for both front control arms, since you cannot buy the bushings separately.
Here, I found an FE4 front "trailing" arm on eBay:
https://www.ebay.com/itm/2016-2017-C...-/282760176103
And here's the picture of the bushing. Clearly different than the FEA bushing, which has a much larger bushing ID and thus cannot deflect as much regardless of rubber durometer.
The FE4 suspension also has no spherical bearings, the FEA has 4 (one in each lateral lower control arm, front and rear), 6 if you include the strut mounts.
All of this combines to improve the dynamic alignment of the FEA over the FE4.