Honda plans expand its GX Series engines portfolio with two all-new engines: the Honda iGX400 and the Honda iGX430.

While it might seem odd to file for two names for both a 400 and 500 ... case with the four-cylinder models. There may be other reasons for Honda to release a 500 version. The new Honda Fours ...

The horizontal-shaft engines will be equipped with smart fuel injection technology and an integrated electronic self-tuning ...