Latest addition to the ProX program is the Steel Intake and Exhaust Valve & Spring Kits. This kit is offered as an alternative where the OEM application uses Titanium valves. ProX has now developed the Steel Intake and Exhaust Valve & Spring Kits, containing a set of steel intake or exhaust valves plus a set of specially designed stronger valve springs. The ProX kit just replaces the OEM valves & valve springs and can be installed using the OEM retainers, bases and valve seals.
Features:

• Steel Valves for increased durability and less wear under extreme conditions


• Nitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide


• Special stronger 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


• Springs are made from premium chrome vanadium steel for higher performance and durability at high rpms


• Comes as complete package for quick, easy and cost efficient replacement

Fitment:
2005 Honda CRF450X
2006 Honda CRF450X
2007 Honda CRF450X
2008 Honda CRF450X
2009 Honda CRF450X
2010 Honda CRF450X
2011 Honda CRF450X
2012 Honda CRF450X
2013 Honda CRF450X
2014 Honda CRF450X
2015 Honda CRF450X
2016 Honda CRF450X
2017 Honda CRF450X