Intake Valve Set Prox w/ springs CRF 250 2004-2007

Valve Kit with springs by ProX.

• Replacement for original valves and valve springs
• Nitrided steel valves to limit wear (very hard surface)
• Springs designed for extra weight of steel valves (heavier than titanium)
• Premium chrome vanadium steel springs combining performance and durability at high rpms
• Kit includes a set of steel valves and a set of matching valve springs
• Can be used with OEM shims, valve stem gaskets and other original components

ProX part number: 28.SIS1336-2