Motorcycle Racing CNC Carbon Fiber Stand Spools Screw Swingarm Slider Silver 6mm Fit For 1999 2000 2001 Yamaha YZF R1 Note: We have 1.25mm and 1.5mm pitch screws available for bikes. Some manufacturers have changed the swingarm spool hole sizing for newer models. Please be sure to properly measure your bolt hole size before ordering . Fitment: Most bikes 6mm swingarm thread fit for Yamaha Material: CNC machined T6061 aluminum construction with hard anodized coating . Quantity : 1 Set with install screws; Installation: Easy installation! bolt straight into your swingarm. Protects the swingarm and axle nut in the event of a crash ,can also be used with a swingarm race stand to raise the rear wheel when you need to change a tyre or perform maintenance