Features: These High Performance Cylinder studs are made from 180,000 psi yield strength, fine grain, heat treated, premium grade 8740 material Threads are rolled after heat treating to insure maximum compressive stresses are retained, insuring maximum strength, and the longest fatigue life possible The case end threads are designed to have a slight interference fit to maintain good thread contact at high temperature Studs are center less ground to insure concentricity, and finished with a premium black oxide treatment , excellent appearance Fitment Honda TRX450ER Electric Start 2006 Honda TRX450ER Electric Start 2007 Honda TRX450ER Electric Start 2008 Honda TRX450ER Electric Start 2009 Honda TRX450ER Electric Start 2012 Honda TRX450ER Electric Start 2013 Honda TRX450ER Electric Start 2014 Yamaha YFZ450R 2009 Yamaha YFZ450R 2010 Yamaha YFZ450R 2011 Yamaha YFZ450R 2012 Yamaha YFZ450R 2013 Yamaha YFZ450R 2014 Yamaha YFZ450R 2015 Yamaha YFZ450R 2016 Yamaha YFZ450R 2017 Yamaha YFZ450R 2018 Yamaha YFZ450R 2019 Yamaha YFZ450R 2020
