I wanted panniers so I ordered the Hepco & Becker C-Bow Holders from Moto Legends in the UK. I just received the kit and can't wait to bolt them on.
Here is what I received, the manuals are in multiple languages with instructions and torque values. I think it would be hard to mess it up. It's a nice looking kit.
It's the same kit for 530, and 400
I ordered bags from Moto Machines on the east coast of US. I ordered the Hepco & Becker Xtravel C-Bow Side Bags.
I'll post pictures when I have everything installed.