Scooters
2009Yamaha Neos 4S
28 fields on record
The 2009 Yamaha Neos 4S is a lightweight 49cc scooter designed for urban commuters and entry-level riders seeking practical, fuel-efficient transportation. Known for its reliable liquid-cooled four-stroke engine and dependable electric starter, it excels as an affordable city runabout. The Neos 4S offers nimble handling and easy maneuverability in congested traffic.
- Capacity
- 49.4 ccm
- Engine
- Single
- Gearbox
- Not on record
Know it? Add it → - Wet weight
- 95.0 kg
- Seat height
- 790 mm
- Power
- 3.1 HP (2.3 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for short urban hops, commuting, and running errands around town, not for speed or distance.
- Built for
- A friendly, unintimidating 50cc scooter that prioritizes ease of use, fuel efficiency, and nimble city maneuvering over performance.
- Not ideal for
- Not suitable for highway riding, long-distance touring, carrying a heavy passenger, or anyone seeking real acceleration or speed.
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
- 49.4 ccm
- Power
- 3.1 HP (2.3 kW)
- Torque
- 3.2 Nm (0.3 kgf-m)
- Engine type
- Single
- Power/weight ratio
- 0.0326 HP/kg (wet)
- Bore x stroke
- 38.0 x 43.6 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
- 1840 mm
- Seat height
- 790 mm
- Wet weight
- 95.0 kg
- Fuel capacity
- 5.40 litres
- Dry weight
- Not on record - add it
Chassis & suspension
- Front suspension
- Telescopic fork
- Rear suspension
- Unit swing
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 190 mm
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 110 mm
- Front tyre
- 120/70-12
- Rear tyre
- 130/70-12
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the Yamaha Neos 4S?
The 2009 Yamaha Neos 4S has a Capacity of 49.4 ccm (3.01 cubic inches).
What engine power does the Yamaha Neos 4S have?
The 2009 Yamaha Neos 4S has a Power of 3.1 HP (2.3 kW).
What is the torque of the Yamaha Neos 4S?
The 2009 Yamaha Neos 4S has a Torque of 3.2 Nm (0.3 kgf-m or 2.4 ft.lbs).
How much does the Yamaha Neos 4S weigh?
The 2009 Yamaha Neos 4S has a Wet weight of 95.0 kg (209.4 pounds).
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