The Yamaha Aerox 4 is the four-stroke version of Yamaha's Aerox 50 sports scooter. It uses a liquid-cooled 49cc four-stroke single with an automatic transmission.
It suits young riders who want the Aerox look with a cleaner, more economical engine. Rivals include the Peugeot Speedfight 50 4T and Piaggio Typhoon 50.
| Year | Photo | Engine | Power | Weight | Seat | Fields |
|---|---|---|---|---|---|---|
| 2021 |  |
49.5 cc | 3 hp | 97 kg | 817 mm | 42 |
| 2020 |  |
49 cc | 3 hp | 97 kg | 817 mm | 42 |
| 2019 | |
49 cc | 3 hp | 97 kg | 817 mm | 42 |
| 2018 | |
49 cc | 3 hp | 97 kg | 817 mm | 42 |
| 2017 |  |
49 cc | 3.4 hp | 97 kg | 817 mm | 42 |
| 2016 | |
49 cc | 3.4 hp | 97 kg | 817 mm | 42 |
| 2015 | |
49 cc | 3.4 hp | 97 kg | 817 mm | 42 |
| 2014 |  |
49 cc | 3.4 hp | 97 kg | 817 mm | 42 |