Aprilia SR 50 R vs Yamaha Aerox R 50 ergonomics

Rider fit: reaching the ground

The Aprilia SR 50 R has a 820 mm seat; the Yamaha Aerox R 50 sits at 815 mm — a 5 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 82 cm for the Aprilia SR 50 R and 82 cm for the Yamaha Aerox R 50.

That makes the Yamaha Aerox R 50 the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Aprilia SR 50 R 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.