Naked Motorcycles
2021Fosti F31
26 fields on record
The 2021 Fosti F31 is an affordable 150cc commuter motorcycle ideal for beginner and budget-conscious riders. Its frugal fuel consumption and modest 12.1 horsepower engine deliver reliable, economical transportation for urban riding. Best suited for short-distance commuting, the F31 prioritizes practicality and low operating costs over performance.
- Capacity
- 149.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- Not on record
Know it? Add it → - Dry weight
- 110.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 12.1 HP (8.8 kW) @ 9000 RPM
What’s new for the 2021 Fosti F31
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Wheelbase | 1180 mm (46.5 inches) | 1250 mm (49.2 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It's built as a basic, economical runabout for short urban trips and light errands rather than performance riding.
- Built for
- It has a modest, no-frills personality focused on fuel efficiency and simplicity rather than excitement or presence.
- Not ideal for
- This bike is not for highway travel, long-distance touring, carrying a passenger comfortably, or anyone seeking real off-road capability or speed.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Range and running costs
Worked out in your browser - nothing is sent to usBased on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 149.0 ccm
- Power
- 12.1 HP (8.8 kW) @ 9000 RPM
- CO2 Emissions
- 51 CO2 g/km
- Torque
- 9.0 Nm (0.9 kgf-m) @ 7500 RPM
- Engine type
- Single, four-stroke
- Fuel consumption
- 2.20 litres/100 km (45.5 km/l)
- Power/weight ratio
- 0.1100 HP/kg (dry)
- Fuel system
- Carburettor
Performance
- Top speed
- 90.0 km/h (55.9 mph)
Dimensions & weight
- Wheelbase
- 1250 mm
- Overall length
- 2025 mm
- Overall width
- 770 mm
- Overall height
- 1090 mm
- Dry weight
- 110.0 kg
- Wet weight
- 125.0 kg
- Fuel capacity
- 15.00 litres
- Ground clearance
- 120 mm
- Seat height
- Not on record - add it
Chassis & suspension
- Front suspension
- Telescopic fork
- Rear suspension
- Dual shocks
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Expanding brake (drum brake)
- Front tyre
- 2.75-18
- Rear tyre
- 3.25-18
Other
- Color options
- Green/black
- Comments
- Chinese brand.
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 | 2020 | 2021 | 2022 |
|---|---|---|---|
| Capacity | 149 cc | 149 cc | 149 cc |
| Dry weight | 110 kg | 110 kg | 110 kg |
| Fuel capacity | 15 L | 15 L | 15 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 Fosti F31?
The 2021 Fosti F31 has a Capacity of 149.0 ccm (9.09 cubic inches).
What engine power does the Fosti F31 have?
The 2021 Fosti F31 has a Power of 12.1 HP (8.8 kW) @ 9000 RPM.
What is the torque of the Fosti F31?
The 2021 Fosti F31 has a Torque of 9.0 Nm (0.9 kgf-m or 6.6 ft.lbs) @ 7500 RPM.
How much does the Fosti F31 weigh?
The 2021 Fosti F31 has a Dry weight of 110.0 kg (242.5 pounds).
Shop this bike
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The 2021 Fosti F31 motorcycle is a sleek and powerful machine that is sure to turn heads on the road. With its stylish design and advanced technology, this bike offers an exhilarating riding experience for motorcycle enthusiasts. The F31 is equipped with a high-performance engine, responsive handling, and comfortable seating, making it ideal for both city commutes and long-distance rides. With its affordable price point and impressive features, the Fosti F31 is a top contender in the motorcycle market.
Overall, the 2021 Fosti F31 motorcycle is a standout option for riders looking for a reliable and stylish bike. Its combination of power, performance, and affordability makes it a great choice for both new and experienced riders. Whether you're cruising through the city streets or hitting the open road, the Fosti F31 offers a thrilling and enjoyable riding experience. If you're in the market for a new motorcycle, the Fosti F31 is definitely worth considering.
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