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Bore, Stroke and Installation Tolerances
Engine Specifications
Bore, Stroke and Installation Tolerances

Bore, Stroke and Installation Tolerances

The basic engine measurements, such as bore, stroke, and corresponding installation tolerances, determine the displacement of a Harley-Davidson. Anyone overhauling engines, comparing components, or selecting aftermarket parts cannot do without these fundamental values. All measurements are listed in inches and are intended as a guide - they do not replace a service manual. Technical work should only be carried out by experienced mechanics.