Prox Racing Parts 28.SIS1336-2 Steel Intake Valve and Spring Kit 853017075918 2-shelf wide

2-shelf wide

Cubic inches (cm3): 28

These windows not only look cool

The new 35mm clamp standard is here

Prox Racing Parts 28.SIS1336-2 Steel Intake Valve and Spring Kit 853017075918 2-shelf wideBrand Prox Racing Parts Model 28. SIS1336 2 Fits: Honda CRF 250 R 2004 2007, CRF 250 X 2004 2013 ProX Steel Valve & Spring Kits offer increased durability and less wear under extreme conditions, easily lasting 3 times longer than the OEM Titanium valves Nitrided valves offer high microhardness while super smooth surface finish reduces friction between stem and guide Spring are made from premium chrome vanadium steel for higher performance and