AlphaMoto Carbon Delrin Swingarm Spools Yamaha Yzf R1 R6 1998-2012 Yzf-R1 Yzf-R6 The listing is for One pair of Carbon delrin swingarm spools with 6mm mounting bolts. They will fit for : Yamaha YZF R1 1998-2012 Yamaha YZF R6 1999-2012 Yamaha YZF R6S 2006-2009