The journals of the main bearings are lubricated by pressurised oil admitted through ducts inside the engine block. This serves to assure the efficient lubrication of the new crankshaft, followed by a rapid recovery of the oil thanks to a new Ducati component, a lobe pump that places the connecting rod compartment under vacuum, similar to the engines used for the MotoGP races. The pump is driven by gears built in a special high-strength techno-polymer and maintains the crankcase area below the pistons in controlled conditions of constant vacuum, thereby reducing the resistance during the downward travel and assuring an efficient recovery of lubricating oil in any condition of engine use.