These are made by Add-On and are designed to mount over the front brake rotors. They cover and protect the whole rotor, more like the 1500's, and they make it possible to add the ring-of-fire lights to an 1800. They are chrome plated ABS plastic and look awesome. They will fit all Goldwing 1800's from 2001-2012 except the air bag models. All mounting hardware and instructions are included.