Pro Circuit's Linkage Arms are CNC-machined from billet aluminum and are designed to stiffen up the initial linkage curve and lower the chassis, making the bike much more stable. This will also help eliminate the initial loose and wallowy feel. Turning and cornering capabilities are greatly improved as well. Although having your suspension revalved by Pro Circuit would make a considerable improvement, the Linkage Arms alone provide a major improvement over the stock set-up. Each link arm includes all of the required bearings and seals. Fitment Yamaha YZ125 2006 Yamaha YZ125 2007 Yamaha YZ125 2008 Yamaha YZ125 2009 Yamaha YZ125 2010 Yamaha YZ125 2011 Yamaha YZ125 2012 Yamaha YZ125 2013 Yamaha YZ125 2014 Yamaha YZ125 2015 Yamaha YZ125 2016 Yamaha YZ125 2017 Yamaha YZ125 2018 Yamaha YZ125 2019 Yamaha YZ125 2020 Yamaha YZ250 2006 Yamaha YZ250 2007 Yamaha YZ250 2008 Yamaha YZ250 2009 Yamaha YZ250 2010 Yamaha YZ250 2011 Yamaha YZ250 2012 Yamaha YZ250 2013 Yamaha YZ250 2014 Yamaha YZ250 2015 Yamaha YZ250 2016 Yamaha YZ250 2017 Yamaha YZ250 2018 Yamaha YZ250 2019 Yamaha YZ250 2020