E90 option S226A vs S704A

[to3m]

Looks like there were (at least?) two suspension options for the E9x cars.

S226A - Sports suspension settings
S704A - M Sports suspension

I've found an pre-LCI E90 SE with S226A, and an LCI E90 SE with S704A. What's the difference? E90 M Sport cars seem to have S704A, both pre- and post-LCI... so I'm assuming there's a difference! But what is it? I've found some forum posts saying these options are the same, and I've found some forum posts saying they're different, so overall I'm none the wiser.

The realoem page for the pre-LCI cars has some confusing entries in the dates columns, but it looks like both get "additional shock absorber, rear" of one form or another, though with different part numbers: http://www.realoem.com/bmw/enUS/showparts?id=VB32-...

LCI cars on the other hand only seem to have the S704A option: http://www.realoem.com/bmw/enUS/showparts?id=PM12-...

Similar for rear spring strut mounting parts, and the corresponding front axle stuff. Are these different parts actually different? Or are they just different revisions of exactly the same thing?

Edited by to3m on Monday 2nd October 03:11

[helix402]

Additional shock absorber is the bump stop. Different lengths are used depending on spring length.