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Pro X Steel Intake Valve Conversion Set Honda CRF250R / CRF250X 2004-2017

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Pro X Steel Intake Valve Conversion Set Honda CRF250R / CRF250X

This kit is offered as an alternative where the OEM application uses lightweight, but less durable Titanium valves. Pro X has now developed the Steel Intake Valve & Spring Kits, containing a set of steel intake valves plus a set of specially designed stronger valve springs. The Pro X kit just replaces the OEM valves & valve springs and can be installed using the OEM retainers, bases and valve seals.


  • Steel Valves for increased durability and less wear under extreme conditions
  • Chrome vanadium steel valve springs deal with the extra weight of the steel valves
  • Fully rebuildable with OEM retainers, bases and seals without the need of any further engine modifications
  • Nitrided valves offer high microhardness while super-smooth surface finish reduces friction between stem and guide

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This product is vehicle specific. Click here to select your vehicle to ensure fitment.

This Product Fits:

CRF250R 2004, 2005, 2006, 2007
CRF250X 2004-2017

This item is also available for 49 other models:

Gas Gas
EC 250 F 2010-2015
EC 300 F 2013-2015
CRF250R 2008-2009
CRF250R 2010-2017
CRF450R 2002-2008
CRF450R 2009-2016
CRF450X 2005-2017
FE250 2013
FE350 2013
FC350 2014-2015
FE350 2014-2016
FE350s 2014-2016
250 SX-F 2006-2007
250 SX-F 2008-2012
350 EXC-F 2012-2016
350 SX-F 2013-2015
350 XC-F 2013-2015
350 XCF-W 2012-2015
KX250F 2007-2008
KX250F 2009-2010
KX250F 2011-2016
KX250F 2004-2006
KX450F 2006-2008
KX450F 2009-2018
RMX450Z 2010-2019
RMZ250 2004-2006
RMZ250 2007-2024
RMZ450 2005-2006
RMZ450 2007
RMZ450 2008-2024
WR250F 2001-2013
WR250F 2015-2019
WR450F 2003-2015
WR450F 2016-2018
YFZ450 2004-2009
YFZ450 LE 2004
YFZ450R 2009-2020
YFZ450R SE 2009-2020
YFZ450 SE 2005-2008
YFZ450X 2008-2011
YFZ450X Bill Balance Edition 2010
YFZ450X SE 2011
YZ250F 2001-2013
YZ250F 2014-2018
YZ250FX 2015-2019
YZ450F 2003-2009
YZ450F 2010-2013
YZ450F 2014-2017
YZ450FX 2016-2020
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style Pro X Steel Intake Valve Conversion Set Honda CRF250R / CRF250X 2004-2017 Item # 10153885 Store SKU Manufacturer Product # 28.SIS1336-2 Availability In Stock: Ships next business day
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