Home Shop Engine Top End Valves KPM Black Diamond Valves for Flathead Big Twins 1937-1948
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for Flathead Big Twins 1937-1948

Kibblewhite Black Diamond valves are CNC machined from one-piece forgings of EV8 stainless steel. The proprietary Black Diamond multi-stage process treats the shaft to a depth of 0.002” creating a hard, smooth and corrosion resistant surface that cannot flake crack or peel off. The valve tips feature welded-on stellite tips for improved resistance to the impact and abrasive wear of the rocker arms. All versions work with modern lead-free fuels.

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Valve by Kibblewhite Precision Machining, fits Flathead 74”-80” 1937-1948, intake/exhaust, length: 159.5 mm, stem: 9.4 mm
W&W# Picture Price incl. VAT* Available from warehouse Germany?
61-348 for Flathead Big Twins 1937-1948 head: 49 mm, replaces OEM 18072-37, and 18082-37 47.74 € each
in stock
61-349 for Flathead Big Twins 1937-1948 oversize, Over-/Undersize: +0.120 ”, head: 52 mm 47.74 € each
in stock
* The price includes German VAT (19% or reduced rate of 7% for Books).


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