Naked Motorcycles
2021Yamaha Byson FI
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The 2021 Yamaha Byson FI is a lightweight naked bike designed for commuters and new riders seeking affordable, reliable daily transportation. Powered by a 150cc single-cylinder four-stroke engine with fuel injection, it delivers modest performance ideal for city riding and modest highway cruising. Known for its practical diamond frame, comfortable ergonomics, and excellent fuel economy, the Byson FI excels as an entry-level bike in developing markets.
- Capacity
- 150.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 133.0 kg
- Seat height
- 790 mm
- Power
- 12.9 HP (9.4 kW) @ 8000 RPM
What’s new for the 2021 Yamaha Byson FI
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Engine capacity | 155.0 ccm (9.46 cubic inches) | 150.0 ccm (9.15 cubic inches) |
| Rear suspension | Swing Arm | Swingarm |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It's built primarily as a lightweight, affordable commuter naked bike for city streets rather than performance riding.
- Built for
- The Byson FI has a simple, no-frills, muscular-looking naked bike character with modest single-cylinder performance.
- Not ideal for
- This is not the bike for riders seeking highway touring comfort, high top speed, or serious off-road capability.
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
- 150.0 ccm
- Power
- 12.9 HP (9.4 kW) @ 8000 RPM
- Torque
- 13.0 Nm (1.3 kgf-m) @ 6000 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0970 HP/kg
- Bore x stroke
- 57.3 x 57.9 mm
- Compression
- 9.5:1
- Cooling system
- Air
- Fuel system
- Injection
- Starting
- Electric & kick
- Ignition
- TCI
- Valves per cylinder
- 2
- Lubrication system
- Wet
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, manual clutch, multiplate
Dimensions & weight
- Wheelbase
- 1340 mm
- Overall length
- 1990 mm
- Overall width
- 780 mm
- Overall height
- 1045 mm
- Seat height
- 790 mm
- Wet weight
- 133.0 kg
- Fuel capacity
- 12.00 litres
- Ground clearance
- 170 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Diamond
- Front suspension
- Telescopic
- Rear suspension
- Swingarm
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Expanding brake (drum brake)
- Front tyre
- 100/80-17
- Rear tyre
- 130/70-17
Other
- Color options
- Matte Red, Matte Brown, Matte Grey
- Comments
- Sold in Asia
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 | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|
| Capacity | 155.00 ccm (9.46 cubic inches) | 155.00 ccm (9.46 cubic inches) | 155.00 ccm (9.46 cubic inches) | 155.00 ccm (9.46 cubic inches) | 150.0 ccm (9.15 cubic inches) |
| Dry weight | 133.0 kg (293.2 pounds) | 133.0 kg (293.2 pounds) | 133.0 kg (293.2 pounds) | 133.0 kg (293.2 pounds) | — |
| Seat height | 790 mm (31.1 inches) | 790 mm (31.1 inches) | 790 mm (31.1 inches) | 790 mm (31.1 inches) | 790 mm (31.1 inches) |
| Fuel capacity | 12.00 litres (3.17 gallons) | 12.00 litres (3.17 gallons) | 12.00 litres (3.17 gallons) | 12.00 litres (3.17 gallons) | 12.00 litres (3.17 US gallons) |
| Color options | Grey, gray/red | Grey, gray/red | Grey, gray/red | Grey, gray/red | Matte Red, Matte Brown, Matte Grey |
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 Byson FI?
The 2021 Yamaha Byson FI has a Capacity of 150.0 ccm (9.15 cubic inches).
What engine power does the Yamaha Byson FI have?
The 2021 Yamaha Byson FI has a Power of 12.9 HP (9.4 kW) @ 8000 RPM.
How many gears does the Yamaha Byson FI have?
The 2021 Yamaha Byson FI has a Gearbox of 6-speed.
What is the torque of the Yamaha Byson FI?
The 2021 Yamaha Byson FI has a Torque of 13.0 Nm (1.3 kgf-m or 9.6 ft.lbs) @ 6000 RPM.
How much does the Yamaha Byson FI weigh?
The 2021 Yamaha Byson FI has a Wet weight of 133.0 kg (293.2 pounds).
Shop this bike
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The 2021 Yamaha Byson FI motorcycle is a powerful and reliable option for riders looking for a smooth and efficient ride. With its fuel injection technology, this motorcycle delivers excellent fuel efficiency and responsive performance. The sleek and modern design of the Byson FI makes it stand out on the road, while its comfortable seating and ergonomic handlebars provide a pleasant riding experience.
The 2021 Yamaha Byson FI motorcycle is an impressive option for riders who value both style and functionality. Its advanced fuel injection system ensures optimal fuel efficiency and smooth acceleration, while its modern design and comfortable features make it a joy to ride. Whether you're commuting in the city or cruising on the open road, the Byson FI is a versatile and dependable choice for motorcycle enthusiasts.
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