Low maintenance with mechanical direct injection with one pump and injector per cylinder for redundancy - no cams valves or electronics.
Dry sump lubrication and apparently the combustion air never enters the crankcase, so no oil mixture fuel and it will operate inverted or standing on it's end for a helicopter.
2600 RPM redline --with power of a four-stroke with twice the displacement-- so it doesn't need a gearbox for propellers.