Summary This is a mini version of Shovelhead Engine It is reduced in a ratio of 1 5 and the details of each part are truly restored The engine is 120mm long 90mm wide 110mm high 1100g The displacement is 4 2ml the cycle diameter is 13mm and the itinerary is 16mm Use fuel as gasoline The ignition device uses 3 1 5V small batteries 4 5V to supply power This is a fairly complicated model that uses aluminum alloy brass and stainless steel CNC processing and manufacturing This is one of the most complicated engines we produced This is a very representative V shaped dual cylinder engine Its cylinder angle is 45 degrees Showhead is a classic engine heart It is the successor of the previous generation of engine Panhead In 1966 the shape of the cylinder head was changed on the basis of the Panhead engine The cylinder head of the shovel head engine adopts the cylinder head shape of an all aluminum version of the iron head sportsterDescription Item Name Shovelhead R31 V2 Double Cylinder Gas EngineSize 120mm 90mm 110mm L W H Weight 1100gPackage Included 1 Shovelhead R31 V2 Engine