Rizoma Sport R Engine Guards Black for Kawasaki Z900 PM325BRizoma Sport R Engine Guards Black for Kawasaki Z900 PM325B Rizoma Sport R Frame Sliders feature a robust delrin plastic puck on top of a CNC machined aluminum base. These two materials team up to provide your motorcycle with the best possible protection. The delrin puck is exceptional at taking an impact and dissipating energy in the event of crash or fall. The bell like shape of the aluminum base features a large surface area to absorb any