vintage european motorcycle engine

background belgian bike black boca cam classic close collectors concours cover craftsmanship cycle cylinder cylinders depth detail details display engine engineering european exhaust fabrique field fields florida frame freedom fuel gas gasoline headers herstal historic horsepower industry iron machine manifold manufacturing mechanical metal metallic motor motorbike motorcycle naked nationale oil old petrol pipe pipes plug plugs polished power raton reflection reflections retro sdof shallow show side south spark sparkplugs speed sport steel touring transport transportation travel vehicle veteran vintage