Learn more about this system at: Landing Gear-BMW
The main page is found at LegUp by Landing Gear
The manual is available, along with an instructional video and lots more. A dealer resource is also located for support and installation.
I removed the LegUp system and installed a sidecar because my health and leg deteriorated even more. The system worked great and was used for about a year.
The original cost was $3499, plus installation fees or just shy of $4000. I am asking $1900 for the system, mounts and retractable legs, electronics, and etc.
I prefer email contact. Let me know if you have any questions.