BMW Base Support System. I had this on my 2007 X5. I'm sure it fits other models of BMWs but you should check with the dealer. The rack is in perfect condition as I only used it once and took it right off. I sold my car so no longer need this.
BMW's modular roof rack system with coded bolts offers security and practicality. Made of high-tensile aluminum tubing, it is remarkably lightweight, strong and corrosion-resistant. Lockable, easy to install and is compatible with a wide range of aerodynamic attachments.
Price: $150 OBO
(throw me an offer, could use some cash)
I'm in San Jose, CA.
creuter27 at gmail dot com