For aprox $1200, you can get an e70 compatible B8 struts matched to lowering springs, from Bilstein. I've fancied those for a while, but can't justify them till I have a suspension issue with my ride that warranty won't cover... IIRC, they are HR Springs in that package.
I don't think it's valved any different than standard B8 models. Wouldn't make sense to.
But yeah, B8, for an X5, you have to look across the atlantic for those.
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2012 X5 xDrive35i Sport Activity - Alpine White - M Sport Package
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