KIBBLEWHITE valve spring kit for YAMAHA WR 450 F, YFM 450 FA 4X4, YFZ 450 R, YZ 450 F from 2003 to 2017

KIBBLEWHITE offers this valve spring kit for YAMAHA WR 450 F, YFM 450 FA 4X4, YFZ 450 R, YZ 450 F from 2003 to 2017. 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 YZ 450 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 alloy
• Spring pressure: 86 lb
• Seat pressure: 39 lb
• Suitable for supercharged or turbocharged applications

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 450 F 2015
YAMAHA WR 450 F 2014
YAMAHA WR 450 F 2013
YAMAHA WR 450 F 2012
YAMAHA WR 450 F 2011
YAMAHA WR 450 F 2010
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 YFM 450 D 4X4 2014
YAMAHA YFM 450 DH 4X4 2014
YAMAHA YFM 450 FA 4X4 2016
YAMAHA YFM 450 FA 4X4 2015
YAMAHA YFM 450 FA 4X4 2014
YAMAHA YFM 450 FA 4X4 2013
YAMAHA YFM 450 FA 4X4 2012
YAMAHA YFM 450 FA 4X4 2006
YAMAHA YFM 450 FA 4X4 2005
YAMAHA YFM 450 FA 4X4 2004
YAMAHA YFM 450 FA 4X4 2003
YAMAHA YFM 450 FA SE 4X4 2006
YAMAHA YFM 450 FA SE 4X4 2005
YAMAHA YFM 450 FAH 4X4 2006
YAMAHA YFM 450 FAH 4X4 2005
YAMAHA YFM 450 FAH 4X4 2004
YAMAHA YFM 450 FAH 4X4 2003
YAMAHA YFM 450 FG 4X4 2013
YAMAHA YFM 450 FG 4X4 2012
YAMAHA YFM 450 FG 4X4 2011
YAMAHA YFM 450 FG 4X4 2010
YAMAHA YFM 450 FG 4X4 2009
YAMAHA YFM 450 FG 4X4 2008
YAMAHA YFM 450 FG 4X4 2007
YAMAHA YFM 450 FG OH 4X4 2007
YAMAHA YFM 450 FG SE 4X4 2007
YAMAHA YFM 450 FG SP 4X4 2008
YAMAHA YFM 450 FGH 4X4 2013
YAMAHA YFM 450 FGH 4X4 2012
YAMAHA YFM 450 FGH 4X4 2011
YAMAHA YFM 450 FGH 4X4 2010
YAMAHA YFM 450 FGH 4X4 2009
YAMAHA YFM 450 FGH 4X4 2008
YAMAHA YFM 450 FGH 4X4 2007
YAMAHA YFM 450 FGP 4X4 2013
YAMAHA YFM 450 FGP 4X4 2012
YAMAHA YFM 450 FGP 4X4 2011
YAMAHA YFM 450 FGPH 4X4 2013
YAMAHA YFM 450 FGPH 4X4 2012
YAMAHA YFM 450 FGPH 4X4 2011
YAMAHA YFM 450 FWAN 4X4 2016
YAMAHA YFM 450 FWAN 4X4 2015
YAMAHA YFM 450 FWAN 4X4 2014
YAMAHA YFM 450 FWAN 4X4 2013
YAMAHA YFM 450 FWAN 4X4 2012
YAMAHA YFM 450 FX 4X4 2010
YAMAHA YFM 450 FX 4X4 2009
YAMAHA YFM 450 FX 4X4 2008
YAMAHA YFM 450 FX 4X4 2007
YAMAHA YFM 450 FX 4X4 2006
YAMAHA YFM 450 FX SE 4X4 2008
YAMAHA YFM 450 FX SE 4X4 2007
YAMAHA YFM 450 P 4X4 2014
YAMAHA YFM 450 PH 4X4 2014
YAMAHA YFZ 450 2009
YAMAHA YFZ 450 2008
YAMAHA YFZ 450 2007
YAMAHA YFZ 450 2006
YAMAHA YFZ 450 2005
YAMAHA YFZ 450 2004
YAMAHA YFZ 450 BB 2007
YAMAHA YFZ 450 BB 2006
YAMAHA YFZ 450 LE 2004
YAMAHA YFZ 450 R 2016
YAMAHA YFZ 450 R 2015
YAMAHA YFZ 450 R 2014
YAMAHA YFZ 450 R 2013
YAMAHA YFZ 450 R 2012
YAMAHA YFZ 450 R 2011
YAMAHA YFZ 450 R 2010
YAMAHA YFZ 450 R 2009
YAMAHA YFZ 450 RSE 2010
YAMAHA YFZ 450 RSE 2009
YAMAHA YFZ 450 SE 2007
YAMAHA YFZ 450 SE 2005
YAMAHA YFZ 450 SP 2008
YAMAHA YFZ 450 SP 2006
YAMAHA YFZ 450 SP2 2008
YAMAHA YFZ 450 SPE2 2007
YAMAHA YFZ 450 X 2010
YAMAHA YFZ 450 XBB 2010
YAMAHA YZ 450 F 2017
YAMAHA YZ 450 F 2016
YAMAHA YZ 450 F 2015
YAMAHA YZ 450 F 2014
YAMAHA YZ 450 F 2013
YAMAHA YZ 450 F 2012
YAMAHA YZ 450 F 2011
YAMAHA YZ 450 F 2010
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
YAMAHA YZ 450 F SP 2006
YAMAHA YZ 450 FX 2017
YAMAHA YZ 450 FX 2016