I would like to report a product that absolutely, positively works. About $50 bought me an elegantly simple flat bar of metal with a heavy duty helmet lock on each end. Removed license plate and frame. Put red reflector screws thru bottom holes in frame and plate and tightened very tight. Used (2) supplied allen-head tamper proof stainless screws thru top holes in frame/plate/helmet guardian flat plate and thru slots in fender. Used supplied stainless washers on outside of plate and inside of fender. Tightened supplied stainless/nylon locking nuts securely and I was done. 15 min. max. 2 keys supplied, but one key works both locks. My wife rides with me 75% of the time during warmer weather and finding a safe place to put two modular Shoei's was straining my brain. This device is built like a vault and quick and dirt simple to operate. As soon as we are off the bike I hand my wife the keys and she is unlocking both sides while I remove my helmet. Both helmets are instantly locked and we use another key to get in the top box to primp, store gloves, put on caps, drink water, etc. I really like the fact that the Guardian leaves the top box free to do its job which is to bring home all kinds of stuff that you find while gallavanting all over God's green earth. I am going to make a vinyl cover for the 2 hanging helmets. This will keep them dry in case of rain and keep their value unknown. Money Well Spent. :wink: