XFR - Aluminum .190 Swing Arm Skid Plate Yamaha YFZ450R YFZ450X (2009-2018) Fitment for: Yamaha YFZ450R/X (2009-2018) Models * Aluminum Chassis only Manufactured from .190 6060 Heat Treated Aluminum For Maximum Strength Full Coverage for Protection of Sprocket, Chain, and Brake Rotor Integrated Chain Wear Strip Simple Bolt On Design-Made in the U.S.A.