Manufactured by Psychic
Kit includes 3 valves, 3 springs, 3 seats 3 retainers (everything pictured)
Nitride coated components help improve heat transfer and carbon build-up for increased valve train life
Valves are forged one piece construction to help with weight reduction and improved flow
Valves are made of 21-2N/SUH35HT Stainless Steel
Springs are made of SWOSC-V material (Oil-tempered steel wire)
Some springs feature a progressive style design with more coils on one end of the spring. The progressive springs are heavier on one end and should always be installed towards the bottom
Non-progressive springs are paint marked and should be installed towards the top
Seats retainers are made from 4041 steel
Compatible with Yamaha models below:
2004 YFZ450
2005 YFZ450
2006 YFZ450
2007 YFZ450
2008 YFZ450
2009 YFZ450
2009 YFZ450R
2010 YFZ450R
2010 YFZ450X
2011 YFZ450R
2011 YFZ450X
2012 YFZ450
2012 YFZ450R
2013 YFZ450
2013 YFZ450R
2014 YFZ450R
2015 YFZ450R
2016 YFZ450R
2017 YFZ450R
2018 YFZ450R
2019 YFZ450R
2020 YFZ450R
2021 YFZ450R
2022 YFZ450R
2023 YFZ450R