Krator SA004-B Black Swingram Spool Slider (Yamaha Engraved - R1 R6 FZ1 FZ6 VMAX XV250 and More! (1998-2015)), Attributes: High Quality Billet Aluminum Swing arm Spools/Sliders(Left & Right Sides)These swing arm spools are designed to protect your swing arm & axle nut in the event of a crash Easy installation no additional hardware required Manufactured in China