4MX | Ref.: KIT-4MX519I
4MX Steel Intake Valve II + Spring YZ250F 01-13 WR250F
- 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
- Spring are made from premium Chrome Vanadium Steel for higher performance and durability under high RPM
- Fully rebuildable with OEM retainers, bases and seals without the need of any further engine modifications
28.06 €
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Description
Kit include:
1 Valve + 1 Spring