PROX Steel Intake Valve - RAPTOR/GRIZZLY for YAMAHA YFM 350 GRIZZLY 2WD, YFM 350 GRIZZLY 4WD, YFM 350 WARRIOR 2WD 1988-2015

PROX offers this intake valve for YAMAHA YFM 350 GRIZZLY 2WD, YFM 350 GRIZZLY 4WD, YFM 350 RAPTOR 2WD, YFM 350 WARRIOR 2WD, YFM 350 WOLVERINE 2WD 1988-2015. A four-stroke engine breathes through its valves. The intake valves open to let the air-fuel mixture into the cylinder, then close perfectly tight during combustion.

Titanium, steel or stainless valve?

This valve is steel.

• Titanium: about 40 % lighter than steel, it lets the engine rev high without valve float; standard on most modern 4-stroke motocross bikes. On the downside, it costs more and its coating wears faster if seats and guides are tired.
• Steel or stainless: heavier but very wear-resistant and cheaper; as a titanium replacement it lasts longer, with springs suited to its weight.
• Tip: replace valves as a set, have the seats checked and fit new valve stem seals.

Why choose PROX?

ProX valves come from Japanese OEM factories; the titanium versions are forged in one piece and chromium-nitride (CrN) coated against wear.

When should you replace the valves on your YAMAHA YFM 350 WARRIOR 2WD?

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

Specifications and fitting tips

• Manufacturer part number: 28.2487-2

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

Also needed with this part

• 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 YFM 350 BRUIN 2WD 2006
YAMAHA YFM 350 BRUIN 2WD 2005
YAMAHA YFM 350 BRUIN 2WD 2004
YAMAHA YFM 350 BRUIN 4WD 2006
YAMAHA YFM 350 BRUIN 4WD 2005
YAMAHA YFM 350 BRUIN 4WD 2004
YAMAHA YFM 350 GRIZZLY 2WD 2015
YAMAHA YFM 350 GRIZZLY 2WD 2014
YAMAHA YFM 350 GRIZZLY 2WD 2013
YAMAHA YFM 350 GRIZZLY 2WD 2012
YAMAHA YFM 350 GRIZZLY 2WD 2011
YAMAHA YFM 350 GRIZZLY 2WD 2010
YAMAHA YFM 350 GRIZZLY 2WD 2009
YAMAHA YFM 350 GRIZZLY 2WD 2008
YAMAHA YFM 350 GRIZZLY 2WD 2007
YAMAHA YFM 350 GRIZZLY 4WD 2015
YAMAHA YFM 350 GRIZZLY 4WD 2014
YAMAHA YFM 350 GRIZZLY 4WD 2013
YAMAHA YFM 350 GRIZZLY 4WD 2012
YAMAHA YFM 350 GRIZZLY 4WD 2011
YAMAHA YFM 350 GRIZZLY 4WD 2010
YAMAHA YFM 350 GRIZZLY 4WD 2009
YAMAHA YFM 350 GRIZZLY 4WD 2008
YAMAHA YFM 350 GRIZZLY 4WD 2007
YAMAHA YFM 350 GRIZZLY IRS 4WD 2011
YAMAHA YFM 350 GRIZZLY IRS 4WD 2010
YAMAHA YFM 350 GRIZZLY IRS 4WD 2009
YAMAHA YFM 350 GRIZZLY IRS 4WD 2008
YAMAHA YFM 350 GRIZZLY IRS 4WD 2007
YAMAHA YFM 350 RAPTOR 2WD 2013
YAMAHA YFM 350 RAPTOR 2WD 2012
YAMAHA YFM 350 RAPTOR 2WD 2011
YAMAHA YFM 350 RAPTOR 2WD 2010
YAMAHA YFM 350 RAPTOR 2WD 2009
YAMAHA YFM 350 RAPTOR 2WD 2008
YAMAHA YFM 350 RAPTOR 2WD 2007
YAMAHA YFM 350 RAPTOR 2WD 2006
YAMAHA YFM 350 RAPTOR 2WD 2005
YAMAHA YFM 350 WARRIOR 2WD 2004
YAMAHA YFM 350 WARRIOR 2WD 2003
YAMAHA YFM 350 WARRIOR 2WD 2002
YAMAHA YFM 350 WARRIOR 2WD 2001
YAMAHA YFM 350 WARRIOR 2WD 2000
YAMAHA YFM 350 WARRIOR 2WD 1999
YAMAHA YFM 350 WARRIOR 2WD 1998
YAMAHA YFM 350 WARRIOR 2WD 1997
YAMAHA YFM 350 WARRIOR 2WD 1996
YAMAHA YFM 350 WARRIOR 2WD 1995
YAMAHA YFM 350 WARRIOR 2WD 1994
YAMAHA YFM 350 WARRIOR 2WD 1993
YAMAHA YFM 350 WARRIOR 2WD 1992
YAMAHA YFM 350 WARRIOR 2WD 1991
YAMAHA YFM 350 WARRIOR 2WD 1990
YAMAHA YFM 350 WARRIOR 2WD 1989
YAMAHA YFM 350 WARRIOR 2WD 1988
YAMAHA YFM 350 WOLVERINE 2WD 2008
YAMAHA YFM 350 WOLVERINE 2WD 2007
YAMAHA YFM 350 WOLVERINE 2WD 2006
YAMAHA YFM 350 WOLVERINE 2WD 2001
YAMAHA YFM 350 WOLVERINE 2WD 2000
YAMAHA YFM 350 WOLVERINE 2WD 1999
YAMAHA YFM 350 WOLVERINE 2WD 1998
YAMAHA YFM 350 WOLVERINE 2WD 1997
YAMAHA YFM 350 WOLVERINE 2WD 1996