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Scooters

2011Yamaha Neos 4 Stroke

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The 2011 Yamaha Neos 4 Stroke is a lightweight 50cc automatic scooter designed for urban commuters and entry-level riders seeking economical, hassle-free transportation. Known for its fuel-efficient liquid-cooled four-stroke engine and automatic transmission, the Neos delivers reliable daily performance with minimal maintenance requirements.

Capacity
49.4 ccm
Engine
Single, four-stroke
Gearbox
Not on record
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Wet weight
95.0 kg
Seat height
790 mm
Power
3.1 HP (2.3 kW) @ 7000 RPM
Other years 2010 2011 2012

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 9Agility 77Comfort 45Off-road 5Touring 15Road manners 55
Off-road & trail5%
Cornering40%
City riding90%
Daily riding75%
Touring10%
Two-up20%
Track5%
Best for
Built purely for short-hop urban commuting, running errands, and light city traffic navigation rather than any performance or long-distance role.
Built for
A practical, no-fuss 50cc scooter that prioritizes fuel efficiency, easy handling, and low running costs over excitement or speed.
Not ideal for
Not suitable for highway travel, touring, carrying a passenger comfortably, or any rider seeking real acceleration or performance.

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 us
At 790mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2011 Yamaha Neos 4 Stroke, with a moderate knee angle of around 100 degrees and a slightly forward riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine
Capacity
49.4 ccm
Power
3.1 HP (2.3 kW) @ 7000 RPM
Torque
3.2 Nm (0.3 kgf-m) @ 7000 RPM
Engine type
Single, four-stroke
Power/weight ratio
0.0326 HP/kg
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
Overall width
663 mm
Overall height
1118 mm
Seat height
790 mm
Wet weight
95.0 kg
Fuel capacity
5.40 litres
Ground clearance
154 mm
Carrying capacity
Lockable helmet/baggage compartment
Dry weight
Not on record - add it
Chassis & suspension
Front suspension
Telescopic fork
Rear suspension
Unit swing
Front wheel travel
70 mm
Rear wheel travel
60 mm
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
Other
Color options
Light blue, white, black

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 201020112012
Capacity 49.40 ccm (3.01 cubic inches) 49.40 ccm (3.01 cubic inches) 49.40 ccm (3.01 cubic inches)
Seat height 790 mm (31.1 inches) 790 mm (31.1 inches) 790 mm (31.1 inches)
Fuel capacity 5.40 litres (1.43 gallons) 5.40 litres (1.43 gallons) 5.40 litres (1.43 gallons)
Color options Light blue, white, black Light blue, white, black Frozen titanium, white, black

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

Rider Reviews

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Common questions

What is the engine size of the Yamaha Neos 4 Stroke?

The 2011 Yamaha Neos 4 Stroke has a Capacity of 49.4 ccm (3.01 cubic inches).

What engine power does the Yamaha Neos 4 Stroke have?

The 2011 Yamaha Neos 4 Stroke has a Power of 3.1 HP (2.3 kW) @ 7000 RPM.

What is the torque of the Yamaha Neos 4 Stroke?

The 2011 Yamaha Neos 4 Stroke has a Torque of 3.2 Nm (0.3 kgf-m or 2.4 ft.lbs) @ 7000 RPM.

How much does the Yamaha Neos 4 Stroke weigh?

The 2011 Yamaha Neos 4 Stroke has a Wet weight of 95.0 kg (209.4 pounds).

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