All-new generation of GX and iGX series of general-purpose engines were introduced by Honda Engines. GX line combines increased power with greater fuel economy in the same envelope, whhile reducing emissions and noise. GX240, GX270, GX340 and GX390 models are overhead valve horizontal shaft engines. iGX series is expanding with an all-new iGX340 and iGX390 engine. The series incorporates an electronic self-tuning regulator governor. GX engines have 6 percent more power than previous models, noise has been reduced by up to 5 decibels, fuel efficiency has been boosted by 12 percent.