KIBBLEWHITE valve spring kit for YAMAHA WR 250 F, WR 450 F, YZ 250 F, YZ 450 F from 2001 to 2013

KIBBLEWHITE offers this valve spring kit for YAMAHA WR 250 F, WR 450 F, YZ 250 F, YZ 450 F from 2001 to 2013. The camshaft opens the valves and the springs close them. At high revs the spring must bring the valve back very quickly: if it is tired, the valve can no longer keep up and “floats”.

Why replace the valve springs?

The benefits:

• Safe running at high revs again.
• Essential with a hotter camshaft or steel valves, which are heavier than titanium.
• Quality steel springs keep their strength longer.

Why choose KIBBLEWHITE?

Kibblewhite chrome-silicon steel springs prevent valve float at high revs.

When should you replace the valve springs on your YAMAHA WR 250 F?

Hard hot starting, valve clearance that keeps closing up or a noisy timing chain: the valve train is wearing.

Specifications and fitting tips

• Contents: 3 x Intake Titanium Retainers, 2 x Exhaust Titanium Retainers, 3 x Intake CrSi Valve Springs, 2 x Exhaust CrSi Valve Springs, 3 x Intake H.T Steel Basewashers, 2 x Exhaust H.T. Steel Basewashers, 3 x Intake Viton Seals, 2 x Exhaust Viton Seals
• Application: Exhaust, Intake
• Retainer material: Titanium
• Material: Chrome silicon
• Spring pressure: 86 lb
• Seat pressure: 39 lb
• Complete spring kit for one engine

Cross-Mania tip: Check the guides and seats before reassembly and lap the valves in. Titanium valves must not be fitted on worn seats.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA WR 250 F 2013
YAMAHA WR 250 F 2012
YAMAHA WR 250 F 2011
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 2005
YAMAHA WR 250 F 2004
YAMAHA WR 250 F 2003
YAMAHA WR 250 F 2002
YAMAHA WR 250 F 2001
YAMAHA WR 450 F 2009
YAMAHA WR 450 F 2008
YAMAHA WR 450 F 2007
YAMAHA WR 450 F 2006
YAMAHA WR 450 F 2005
YAMAHA WR 450 F 2004
YAMAHA WR 450 F 2003
YAMAHA YZ 250 F 2013
YAMAHA YZ 250 F 2012
YAMAHA YZ 250 F 2011
YAMAHA YZ 250 F 2010
YAMAHA YZ 250 F 2009
YAMAHA YZ 250 F 2008
YAMAHA YZ 250 F 2007
YAMAHA YZ 250 F 2006
YAMAHA YZ 250 F 2005
YAMAHA YZ 250 F 2004
YAMAHA YZ 250 F 2003
YAMAHA YZ 250 F 2002
YAMAHA YZ 250 F 2001
YAMAHA YZ 450 F 2009
YAMAHA YZ 450 F 2008
YAMAHA YZ 450 F 2007
YAMAHA YZ 450 F 2006
YAMAHA YZ 450 F 2005
YAMAHA YZ 450 F 2004
YAMAHA YZ 450 F 2003