I agree they would need a notch cut out but you could supply a template for that so they could be mounted with the running boards as long as you knew what brand they have installed or are installing.Hi, Thanks for your comments. Boards would have to be customized with a notch out of them. We demonstrated the blue vulcan at least 5000 times at rallies and not a scratch on fenders. They make mount and dis mounting trike a lot easier. View attachment 25134Thanks Tom