Scooters
2021Yamaha Aerox 4
36 fields on record
The 2021 Yamaha Aerox 4 is a lightweight 50cc automatic scooter designed for new riders and urban commuters seeking affordable, fuel-efficient transportation. Powered by a liquid-cooled four-stroke engine with fuel injection, it delivers modest performance ideal for city riding. Known for its simplicity, reliability, and low operating costs, the Aerox 4 excels as an entry-level scooter for casual riders.
- Capacity
- 49.5 ccm
- Engine
- Single, four-stroke
- Gearbox
- Not on record
Know it? Add it → - Wet weight
- 97.0 kg
- Seat height
- 817 mm
- Power
- 3.0 HP (2.2 kW) @ 7250 RPM
What’s new for the 2021 Yamaha Aerox 4
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Engine capacity | 49.0 ccm (2.99 cubic inches) | 49.5 ccm (3.02 cubic inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for short-hop urban commuting and running errands, not for speed or distance.
- Built for
- A practical, nimble little scooter that prioritizes ease of use, fuel efficiency, and city maneuverability over performance.
- Not ideal for
- This is not the choice for anyone wanting highway speeds, long-distance touring, or carrying a passenger any real distance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 49.5 ccm
- Power
- 3.0 HP (2.2 kW) @ 7250 RPM
- Torque
- 3.3 Nm (0.3 kgf-m) @ 4500 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0309 HP/kg (wet)
- Bore x stroke
- 38.0 x 43.5 mm
- Compression
- 12.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric & kick
- Ignition
- TCI
- Lubrication system
- Wet sump
Transmission
- Transmission type
- Automatic
- Final drive
- Belt
Dimensions & weight
- Wheelbase
- 1275 mm
- Overall length
- 1870 mm
- Overall width
- 705 mm
- Overall height
- 1155 mm
- Seat height
- 817 mm
- Wet weight
- 97.0 kg
- Fuel capacity
- 6.00 litres
- Ground clearance
- 118 mm
- Carrying capacity
- Under-seat helmet storage for a full-face helmet.
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Steel, tubular
- Front suspension
- Telescopic fork
- Rear suspension
- Hydraulic unit swing
- Front wheel travel
- 80 mm
- Rear wheel travel
- 64 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 190 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 190 mm
- Front tyre
- 120/70-13
- Rear tyre
- 130/60-13
Other
- Color options
- Matte Grey, Yamaha Blue
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2014 | 2016 | 2018 | 2019 | 2021 |
|---|---|---|---|---|---|
| Capacity | 49 cc | 49 cc | 49 cc | 49 cc | 50 cc |
| Seat height | 817 mm | 817 mm | 817 mm | 817 mm | 817 mm |
| Fuel capacity | 7 L | 6 L | 6 L | 6 L | 6 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha Aerox 4?
The 2021 Yamaha Aerox 4 has a Capacity of 49.5 ccm (3.02 cubic inches).
What engine power does the Yamaha Aerox 4 have?
The 2021 Yamaha Aerox 4 has a Power of 3.0 HP (2.2 kW) @ 7250 RPM.
What is the torque of the Yamaha Aerox 4?
The 2021 Yamaha Aerox 4 has a Torque of 3.3 Nm (0.3 kgf-m or 2.4 ft.lbs) @ 4500 RPM.
How much does the Yamaha Aerox 4 weigh?
The 2021 Yamaha Aerox 4 has a Wet weight of 97.0 kg (213.8 pounds).
Shop this bike
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The 2021 Yamaha Aerox 4 is a stylish and powerful motorcycle that offers a smooth and exhilarating ride. With its 155cc liquid-cooled engine, this bike provides impressive performance and agility, making it perfect for urban commuting as well as long-distance journeys. The Aerox 4 also features a sleek and modern design, with LED headlights and a digital instrument panel, adding to its appeal for riders looking for a combination of style and functionality.
Overall, the 2021 Yamaha Aerox 4 is a top-notch choice for riders seeking a versatile and reliable motorcycle. Its powerful engine, stylish design, and advanced features make it a standout option in its class. Whether you're cruising through city streets or hitting the open road, the Aerox 4 delivers an exceptional riding experience that is sure to impress. If you're in the market for a high-performance scooter with a modern aesthetic, the Yamaha Aerox 4 is definitely worth considering.
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