Spring sets are heavy dutyMade in the U.S.A. Yamaha -- YZF-R6 -- (2008, 2012, 2006, 2013, 2014, 2002, 2011, 2015, 2001, 2010, 2007, 2009, 2000, 1999, 2016, 2017, 2020, 2019, 2018); Yamaha -- FZ6 R -- (2012, 2013, 2014, 2015, 2009, 2010, 2011, 2017,...