MOOSE RACING valve stem seals for YAMAHA WR 450 F, YFZ 450 R, YFZ 450 RSE, YFZ 450 X, YZ 450 F from 2009 to 2013

MOOSE RACING offers these valve stem seals for YAMAHA WR 450 F, YFZ 450 R, YFZ 450 RSE, YFZ 450 X, YZ 450 F from 2009 to 2013. Each valve slides in a guide. At the top of the guide, a small seal (the valve stem seal) lets through just enough oil to lubricate but stops it running into the combustion chamber.

Why replace the valve stem seals?

The benefits:

• To be replaced every time the valves are removed.
• Cure oil consumption and blue smoke on start-up.
• An inexpensive part that protects valves and guides.

Why choose MOOSE RACING?

Moose Racing has its gaskets made in the USA and supplies OEM-quality oil seals: everything needed for a leak-free rebuild, in a single kit.

When should you replace this part?

Blue smoke on start-up after standing overnight is the typical sign of hardened seals. They are also replaced at every head rebuild, even if they look fine.

Specifications and fitting tips

• Contents: 2 x Intake Seals, 2 x Exhaust Seals
• Application: Exhaust, Intake
• Material: Viton®
• Contact surfaces engineered for improved sealing
• High-temperature Viton® and PTFE materials

Cross-Mania tip: Replace them every time the valves are removed and oil the valve stem before sliding them on.

Also needed with this part

• Top-end gasket kit : MOOSE · COMETIC
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50

Compatibility

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

Fits:
YAMAHA WR 450 F 2013
YAMAHA WR 450 F 2012
YAMAHA WR 450 F 2011
YAMAHA WR 450 F 2010
YAMAHA YFZ 450 R 2011
YAMAHA YFZ 450 R 2010
YAMAHA YFZ 450 R 2009
YAMAHA YFZ 450 RSE 2011
YAMAHA YFZ 450 RSE 2010
YAMAHA YFZ 450 RSE 2009
YAMAHA YFZ 450 X 2011
YAMAHA YFZ 450 X 2010
YAMAHA YZ 450 F 2013
YAMAHA YZ 450 F 2012
YAMAHA YZ 450 F 2011
YAMAHA YZ 450 F 2010