Subaru’s RGX6500 and RGX7500 generators are a mid-range option featuring overhead cam (OHC) EX Series engines. The RGX6500 is powered by Subaru’s 12-hp EX35 engine and delivers a maximum output of 6,500 watts. It has a 7.3-gallon fuel tank and offers 10.3 hours of continuous operation at the rated load. The RGX7500 is powered by Subaru’s 14-hp EX40 engine with a maximum output of 7,500 watts. It has a 7.3-gallon fuel tank and 7.4 hours of continuous run time at the rated load.