The Hepco & Becker Tank Ring is the mounting plate needed to equip your bike with a Hepco & Becker tank bag. The tank ring is mounted to your bike’s filler cap with screws and features a magnetic base for the bag to attach to. The magnets from the bag and tank ring come together to form a strong bond only broken when deliberate force is applied. 

Please see the picture showing the 7-bolt pattern for the required measurements and dimensions and verify fitment and part number for your bike.

This can fit BMWs with the Keyless cap, but you may have to use washers to create clearance for it to open.