Features:
- Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel
- Lightweight, strong, one piece forging with profiles that provide excellent flow characteristics
- Valve is infused by a special German process to a depth of .002, with a surface build up of .0002 which improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating
- Each valve is designed using Finite Element Analysis (F.E.A) software, and profiles are tested on a computerized flow bench
- Stems are coated with black nitroneg
- Made in the USA
- Requires the use of Kibblewhite spring kit.
Fit the models:
| YAMAHA |
WR 250 F |
2001 |
| YAMAHA |
WR 250 F |
2002 |
| YAMAHA |
WR 250 F |
2010 |
| YAMAHA |
WR 250 F |
2009 |
| YAMAHA |
WR 250 F |
2008 |
| YAMAHA |
WR 250 F |
2007 |
| YAMAHA |
WR 250 F |
2006 |
| YAMAHA |
WR 250 F |
2004 |
| YAMAHA |
WR 250 F |
2005 |
| YAMAHA |
WR 250 F |
2003 |
| YAMAHA |
WR 250 F |
2011 |
| YAMAHA |
WR 250 F |
2012 |
| YAMAHA |
WR 250 F |
2013 |
| YAMAHA |
WR 450 F |
2003 |
| YAMAHA |
WR 450 F |
2005 |
| YAMAHA |
WR 450 F |
2004 |
| YAMAHA |
WR 450 F |
2008 |
| YAMAHA |
WR 450 F |
2007 |
| YAMAHA |
WR 450 F |
2006 |
| YAMAHA |
WR 450 F |
2009 |
| YAMAHA |
YZ 250 F |
2011 |
| YAMAHA |
YZ 250 F |
2013 |
| YAMAHA |
YZ 250 F |
2010 |
| YAMAHA |
YZ 250 F |
2012 |
| YAMAHA |
YZ 250 F |
2001 |
| YAMAHA |
YZ 250 F |
2002 |
| YAMAHA |
YZ 250 F |
2003 |
| YAMAHA |
YZ 250 F |
2004 |
| YAMAHA |
YZ 250 F |
2006 |
| YAMAHA |
YZ 250 F |
2005 |
| YAMAHA |
YZ 250 F |
2009 |
| YAMAHA |
YZ 250 F |
2008 |
| YAMAHA |
YZ 250 F |
2007 |
| YAMAHA |
YZ 450 F |
2008 |
| YAMAHA |
YZ 450 F |
2007 |
| YAMAHA |
YZ 450 F |
2006 |
| YAMAHA |
YZ 450 F |
2009 |
| YAMAHA |
YZ 450 F |
2003 |
| YAMAHA |
YZ 450 F |
2005 |
| YAMAHA |
YZ 450 F |
2004 |

Kibblewhite Precision Machining, Inc. (KPMI) is a U.S.-based manufacturer founded in 1939, specializing in high-performance valvetrain components for motorcycles and motorsports. Headquartered in Pacifica, California, KPMI is known for precision-engineered valves, springs, guides, and related parts, serving a global market including sportbikes, dirt bikes, and custom builds.
| Brand |
Model |
Year |
Name |
CC |
| YAMAHA |
WR |
2001 |
|
250 |
| YAMAHA |
WR |
2002 |
|
250 |
| YAMAHA |
WR |
2003 |
|
250 |
| YAMAHA |
WR |
2004 |
|
250 |
| YAMAHA |
WR |
2005 |
|
250 |
| YAMAHA |
WR |
2006 |
|
250 |
| YAMAHA |
WR |
2007 |
|
250 |
| YAMAHA |
WR |
2008 |
|
250 |
| YAMAHA |
WR |
2008 |
|
250 |
| YAMAHA |
WR |
2008 |
|
250 |
| YAMAHA |
WR |
2009 |
|
250 |
| YAMAHA |
WR |
2009 |
|
250 |
| YAMAHA |
WR |
2009 |
|
250 |
| YAMAHA |
WR |
2010 |
|
250 |
| YAMAHA |
WR |
2010 |
|
250 |
| YAMAHA |
WR |
2010 |
|
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
WR |
2003 |
|
450 |
| YAMAHA |
WR |
2004 |
|
450 |
| YAMAHA |
WR |
2005 |
|
450 |
| YAMAHA |
WR |
2006 |
|
450 |
| YAMAHA |
WR |
2007 |
|
450 |
| YAMAHA |
WR |
2008 |
|
450 |
| YAMAHA |
WR |
2009 |
|
450 |
| YAMAHA |
YZ |
2003 |
|
450 |
| YAMAHA |
YZ |
2004 |
|
450 |
| YAMAHA |
YZ |
2005 |
|
450 |
| YAMAHA |
YZ |
2006 |
|
450 |
| YAMAHA |
YZ |
2007 |
|
450 |
| YAMAHA |
YZ |
2008 |
|
450 |
| YAMAHA |
YZ |
2009 |
|
450 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2006 |
50th Anniversary Limited Edition |
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2006 |
50th Anniversary |
450 |
| YAMAHA |
WR |
2008 |
|
250 |
| YAMAHA |
WR |
2008 |
|
250 |
| YAMAHA |
WR |
2009 |
|
250 |
| YAMAHA |
WR |
2010 |
|
250 |
| YAMAHA |
WR |
2009 |
|
250 |
| YAMAHA |
WR |
2010 |
|
250 |
| YAMAHA |
YZ |
2006 |
50th Anniversary Limited Edition |
450 |
| YAMAHA |
WR |
2001 |
|
250 |
| YAMAHA |
WR |
2002 |
|
250 |
| YAMAHA |
WR |
2003 |
|
250 |
| YAMAHA |
WR |
2004 |
|
250 |
| YAMAHA |
WR |
2006 |
|
250 |
| YAMAHA |
WR |
2007 |
|
250 |
| YAMAHA |
WR |
2011 |
|
250 |
| YAMAHA |
WR |
2011 |
|
250 |
| YAMAHA |
WR |
2011 |
|
250 |
| YAMAHA |
WR |
2011 |
|
250 |
| YAMAHA |
WR |
2003 |
|
450 |
| YAMAHA |
WR |
2004 |
|
450 |
| YAMAHA |
WR |
2005 |
|
450 |
| YAMAHA |
WR |
2006 |
|
450 |
| YAMAHA |
WR |
2007 |
|
450 |
| YAMAHA |
WR |
2008 |
|
450 |
| YAMAHA |
WR |
2009 |
|
450 |
| YAMAHA |
WR |
2005 |
|
250 |
| YAMAHA |
WR |
2008 |
|
250 |
| YAMAHA |
WR |
2009 |
|
250 |
| YAMAHA |
WR |
2010 |
|
250 |
| YAMAHA |
WR |
2011 |
|
250 |
| YAMAHA |
WR |
2011 |
|
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
450 |
| YAMAHA |
YZ |
2004 |
|
450 |
| YAMAHA |
YZ |
2005 |
|
450 |
| YAMAHA |
YZ |
2006 |
|
450 |
| YAMAHA |
YZ |
2007 |
|
450 |
| YAMAHA |
YZ |
2008 |
|
450 |
| YAMAHA |
YZ |
2009 |
|
450 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
WR |
2012 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
WR |
2012 |
|
250 |
| YAMAHA |
WR |
2012 |
|
250 |
| YAMAHA |
WR |
2012 |
|
250 |
| YAMAHA |
WR |
2012 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
WR |
2013 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2006 |
50th Anniversary Limited Edition |
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
WR |
2013 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
WR |
2013 |
|
250 |
| YAMAHA |
WR |
2013 |
|
250 |
| YAMAHA |
WR |
2013 |
|
250 |