Standard size us made Norton Commando black diamond inlet valves as used on 750 and 850 twins including Fastback, Roadster, Interstate, Hi Rider, etc from Kibblewhite engineering. Purchase is for 2 valves. Best of the best!
All KPMI black diamond™ stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .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 our computerized flow bench. Black Diamond™ valves are light, strong, one piece forgings with profiles that provide excellent flow characteristics.
Head diameter: 1.500″ stem diameter .3107″ tulip 1.5″ radius overall length 4.065″
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For Norton Valve Springs CLICK HERE.
Additional Kibblewhite Products are AVAILABLE HERE.