motorrad, thanks. the suspension is off one of my ole race bikes. figured i would put them on. when i build my 500af i am going ot put a set on there as well. fluidyne made the rads for me. they are the same size as the steel frame ones. they look really big bc they are made for the frame. didnt want to make brackets or anything, so i had them make me a set. really good guys out there. would be glad to hook anybody up with them.