The document describes a six-stroke engine invented by Malcolm Beare that combines aspects of two-stroke and four-stroke engines. It retains the four-stroke piston below the cylinder head while adding a second piston in the cylinder head that operates like the piston in a two-stroke. This hybrid design increases power and torque over a four-stroke while reducing weight and complexity compared to conventional four-stroke engines. Key advantages include a 35% increase in torque and efficiency, lower reciprocating mass, and fewer overall parts.