I have not seen Ventura racks mentioned here, they are very common in this part of the world; I have just mounted one on my R12S and found it simple to fit, well engineered and very effective. As can be seen the rack is easily removed from the support rails and an optional grab handle fitted in its place. The handle is unobtrusive and is handy when moving the bike around, the rails also provide a place to attach straps or ties if required.
The system is manufactured from steel tubing for strength but overall weight is low.
The support rails mounts to the standard BMW attachment points, but since my bike has the passenger foot pegs removed I needed to add a 10mm spacer (stainless nut) to make up for the lack of the alloy peg bracket.
Several bags are available, the one I have is expandable for extra capacity when required. The bag lifts of the rack, but I find it just as easy to lift the rack and bag of together.
The designed load rating of the system is 9kg (20lbs).
http://www.ventura-bike.com/
One up mode.
Two up mode.
With pack expanded.
The rack.
With the optinal handle mounted.
