Hello, this is just a writeup on how I made my cooling system for my 103. Im not sure how effective it is, but im sure it will do something. (Haven’t tested yet) started out with a cardboard skeleton and slapped fiberglass onto it and created the duct, smothed it up with bondo and painted it. Used truck bed liner for the side that is facing the wheel (obvious reasons). I then needed something flexible but wouldn’t collapse when bent, used this 4” dryer hose and cut and sewed a shroud for it protecting it from water and debris. Then got another dryer thing for the intake between the forks. Used plastic car fasteners for mounting and used the eyelets under my tank to mount the duct in place. Currently it is zip-tied to the eyelets (look at picture to understand) as a mount. Stay safe out there!