kibblewhite stoel vlv bronze 32 mm 10 b320Copper Based Material Designed Specifically For Use With Titanium Valves in High Performance Applications, Give The Seat Excellent Thermal Characteristics as well as Resistance to Corrosion and Wear, these seats are the result of a two years we record duri r & durt duri r & durfmi r & es r & EFEAR KPMI 5 Valve Singles, Multi cylinder Street Bikes, and British and European 4 Strokes, In Each Test The Wear, Thermische geleidbaarheid en bewerkbaarheid