BSA B25 1968 69 70 71 Valve set Kibblewhite black diamond intake exhaust PWK and barrel

and barrel

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BSA B25 1968 69 70 71 Valve set Kibblewhite black diamond intake exhaust PWK and barrelYou will get 2 brand new valves as pictured and described in the title. The exhaust measures 1. 354" the intake measures 1. 453" 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.