We've made a few of these lap timer mounts over the years for our own bikes, and had a lot of interest in them... so we decided to make a run of them. -We have 4 options at the moment, solo solo2, 41mm forks, 50mm forks. -Made from 7075 Al. Very light and strong. -Hardcoat anodized -Come with all necessary mounting hardware -Designed so that the power port can be plugged with with any model $50 shipped in the US. Let me know if there are any questions please!