Honda Helix vs Yamaha Morphous ergonomics

Rider fit: reaching the ground

The Honda Helix has a 665 mm seat; the Yamaha Morphous sits at 655 mm — a 10 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 67 cm for the Honda Helix and 66 cm for the Yamaha Morphous.

That makes the Yamaha Morphous the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Honda Helix gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.