Black Swingarm Spools Sliders Paddock bobbins Racing Dirt Motorcycle Fit For Yamaha R1 YZF-R1 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Thread: 6mm Material: High Quality Billet Aluminum Installation: Easy to install, they bolt straight into your swingarm Color: Black Quantity: Set of 2 with bolts