UK made Plasma hardened Inlet valve fits T100 and Daytona 500cc twins 1967 to 1974
Valve is hardened using the "Pulsed Plasma Nitriding." process, this gives the valve resistance to wear and anti friction properties , when this type of valve is matched with our Colsibro material valve guides , you have the best combination for valve and guide, for performance and longevity
