BMW will not add (or typically won't unless it's been done by the dealer to a stock vehicle) OEM aftermarket items in the lease. It's too bad because if they did you'd only pay for a portion, but i think that's why they're not doing it.

Adding the factory aero kit is not a problem. I've added Bull-bar and 4.6 kit to my old E53 4.4 and not had any problems, actually even changed wheels (y spoke to 5 spoke) without question.

You should be able to buy the kit for 15-20% off retail plus paint and install. There are a few on ebay (one primed and one non primed) for about $800-$900. Paint and install should run you another $800, but i know the mounting instructions have been posted here and a few people have done the install themselves in a day.

good luck and let us see it!

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