A 54 KH Racer

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Model KH and KHK 1954–1956: 885 cc side-valve engines, using the 45 model bore, but with the stroke increased to 4.5625" (115.89 mm). This is the only small twin with a longer stroke than 3.8125", which is otherwise universal to the entire 45/K/Sportster line from 1929 to the present (exception: XR750, XB9 Buell).
Originally Posted by mudpuddle on : www.hdforums.com

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