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Must use KPMI spring kit with these valves. Not compatible with O.E.M. springs.Fits:HONDACRF250R 04-07, CRF250X 04-17
: Kibblewhite intake valves are a great upgrade from your O.E.M.
: motorcycle valves due to their superior performance and outstanding reliability.All KPMI Black Diamond™ stainless steel valves are impregnated by a special German process to a depth of 0.002", with a surface build up of 0.0002".
: This "Black Diamond™" process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating.
: Each valve is designed using Finite Element Analysis software, and profiles are tested on Kibblewhite's computerized flow bench.
: Black Diamond™ Valves are light, strong, one-piece forgings with profiles that provide excellent flow characteristics and will outlast titanium valves.Detailed Specifications:Type: Valve, intake, Black Diamond™.Material: Stainless steel.Quantity