Naked Motorcycles

2021Fosti F51

23 fields on record

The 2021 Fosti F51 is an entry-level naked bike designed for new riders and commuters seeking an affordable, fuel-efficient machine. Its lightweight 149cc single-cylinder engine delivers modest power while achieving excellent fuel economy of over 106 mpg, making it ideal for daily urban riding and budget-conscious ownership.

Capacity: 149.0 ccm
Engine: Single, four-stroke
Gearbox: Not on record
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Dry weight: 115.0 kg
Seat height: Not on record
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Power: 12.1 HP (8.8 kW) @ 9000 RPM

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What’s new for the 2021 Fosti F51

vs the 2020

Spec	2020	2021
Wheelbase	1180 mm (46.5 inches)	1350 mm (53.1 inches)

Other years 2020 2021

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering40%

City riding80%

Daily riding65%

Touring15%

Two-up20%

Track10%

Best for: It's built for light urban commuting and short, low-speed trips around town rather than performance riding.
Built for: It has a friendly, unintimidating nature suited to learners and economical daily runabouts.
Not ideal for: It's not for experienced riders seeking highway speeds, long-distance touring, or spirited performance riding.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Range and running costs

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Units

Currency

Fuel per litre

Riding a year

Based 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.

Full specifications

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: 0.1052 HP/kg (dry)

Performance

Top speed: 90.0 km/h (55.9 mph)

Dimensions & weight

Wheelbase: 1350 mm
Overall length: 1990 mm
Overall width: 760 mm
Overall height: 1100 mm
Dry weight: 115.0 kg
Wet weight: 128.0 kg
Fuel capacity: 15.00 litres
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: 90/90-17
Rear tyre: 110/80-17

Other

Color options: 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	2020	2021
Capacity	149 cc	149 cc
Dry weight	115 kg	115 kg
Fuel capacity	15 L	15 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2021 Fosti F51 motorcycle is a sleek and stylish ride that offers a smooth and powerful performance. With its 150cc engine, this bike delivers impressive speed and acceleration, making it a great choice for motorcycle enthusiasts. The F51 also boasts a comfortable seating position and a responsive handling, making it a joy to ride on both city streets and open highways.

In addition to its performance capabilities, the 2021 Fosti F51 motorcycle features a modern and eye-catching design that is sure to turn heads. Its sleek lines and bold color options make it a standout choice for riders who want to make a statement on the road. Overall, the F51 offers a winning combination of performance, style, and comfort, making it a top contender in the 150cc motorcycle category.

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