Robin Subaru x Series air-cooled engines

Ex SeriesWith four models rated at 4.5, 6.0, 7.0 and 9.0 horsepower, Ex Series air-cooled engines feature a chain-driven overhead cam. The design lowers resistance for fuel/air flow, and pent-roof-type combustion chambers allow high combustion ratios for more power and torque, while reducing emissions.



Sept. 28, 2010
With four models rated at 4.5, 6.0, 7.0 and 9.0 horsepower, Ex Series air-cooled engines feature a chain-driven overhead cam. The design lowers resistance for fuel/air flow, and pent-roof-type combustion chambers allow high combustion ratios for more power and torque, while reducing emissions.