The 2021 Honda Gold Wing GL1800 is powered by a horizontally opposed six-cylinder engine. It has a displacement of 1,833 cc (or approximately 1.8 liters). This engine produces around 124 horsepower (92.5 kilowatts) at 5,500 rpm. It's worth noting that horsepower ratings can vary slightly depending on factors such as the exhaust system and regional regulations.
It's advisable to refer to the manufacturer's specifications or consult a Honda dealer for the most up-to-date and accurate information on the horsepower of specific Gold Wing models, as newer versions may have different power outputs.