This valve kit includes 2 valves, 2 springs, 2 seats, and 2 retainers everything shown in the picture. Key features of this kit include:
Nitride-coated components: Enhance heat transfer and reduce carbon build-up, increasing the longevity of the valve train.
Valves: Forged from a single piece for weight reduction and improved flow, made from 21-2N/SUH35HT stainless steel.
Springs: Made from SWOSC-V material (oil-tempered steel wire).
Some springs feature a progressive design with more coils on one end. These should be installed with the heavier end towards the bottom.
Non-progressive springs are paint-marked and should be installed towards the top.
Seats & Retainers: Both are made from 4041 steel for added strength and durability.
Compatible with the following Kawasaki models:
2009 KX450F
2010 KX450F
2011 KX450F
2012 KX450F
2013 KX450F
2014 KX450F
2015 KX450F