The mounts/bumper brackets are shown in the attached drawing and link, as item #3.

Interesting that there is only one bumper carrier shown (Item #1, the metal piece inside the plastic bumper). When I installed my hitch kit on the E53, I had to change the carrier to a new one to match the mounting brackets (which had a different location than the original shocks). I know the kit was updated at one point, with spacers behind the brackets (also referenced in the instructions linked above) but I don't know if the carrier changed or not. Make sure they match up if you are assembling this from parts; the difference is in the fore/aft location.

RealOEM.com - Online BMW Parts Catalog


Jeff

Attached Images

 

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue