How many cc is 5.5 HP?

The conversion from horsepower (HP) to cubic centimeters (cc) isn't straightforward, as it depends on the engine's efficiency and design. However, a rough estimate is that 1 HP is approximately equivalent to 15 cc for a gasoline engine. Therefore, 5.5 HP would be roughly around 82.5 cc, but this can vary based on the engine type. Always refer to specific engine specifications for accurate conversions.