Kibblewhite Precision 10-SC310 Iron Alloy replacement valve Seat for Steel replacement valve

All applications listed use two intake and 2 exhaust seats unless otherwise noted.
Head Diameter: 31mm.
1.220in. x .906in.x .375in. OD x ID x Height.

Premium replacement valve seats for applications using steel valves. A specific combination of alloys allowed a creation of high density, iron-based replacement valve seat with uniform hardness, exceptional thermal qualities and high resistance to wear and recession caused by microwelding. Only by using the latest developments in powdered metal technology were we able to blend these alloys to give a seat material with the qualities required for todays engines. These seats have been tested on the track and street in high RPM applications with leaded, unleaded, and oxygenated fuel, as well as methanol, ethanol, nitrous, and forced induction applications. Sold each. Made in the USA.

This item fits the following vehicle applications:
2003-2009 fits YAM WR450F
2011-2016 fits YAM WR450F
2004-2009 fits YAM YFZ450
2012-2013 fits YAM YFZ450
2006-2007 fits YAM YFZ450 Bill Balance Edition
2007-2008 fits YAM YFZ450 SE
2009-2017 fits YAM YFZ450R
2009-2017 fits YAM YFZ450R SE
2010-2011 fits YAM YFZ450X
2010 fits YAM YFZ450X Bill Balance
2011 fits YAM YFZ450X SE
2003-2009 fits YAM YZ450F