That setup implies a lot less mass in the cylinder head and decreased excess weight for the overall outboard. At the same time, four valves per cylinder signifies terrific engine combustion, which contributes to horsepower, torque and fuel effectiveness. Fast Acceleration Subscribe for getting all the most up-to-date Yamaha products https://yamaha-85-hp-outboard-mot57899.thezenweb.com/not-known-details-about-yamaha-300-hp-outboard-motors-73688004