What category is the 2021 Yamaha Neos 4?

The 2021 Yamaha Neos 4 has a Category of Scooter.

What is the engine size of the 2021 Yamaha Neos 4?

The 2021 Yamaha Neos 4 has a Capacity: of 49.0 ccm (2.99 cubic inches).

What type of engine does the 2021 Yamaha Neos 4 have?

The 2021 Yamaha Neos 4 has a Engine type of Single cylinder, four-stroke.

What is the engine power of the 2021 Yamaha Neos 4?

The 2021 Yamaha Neos 4 has a Power of 3.1 HP (2.2 kW) @ 7000 RPM.

What is the torque of the 2021 Yamaha Neos 4?

The 2021 Yamaha Neos 4 has a Torque of 3.2 Nm (0.3 kgf-m or 2.3 ft.lbs) @ 7000 RPM.

Is the 2021 Yamaha Neos 4 air cooled or liquid cooled?

The 2021 Yamaha Neos 4 has a Cooling system of Liquid.

How many gears does the 2021 Yamaha Neos 4 have?

The 2021 Yamaha Neos 4 has a Gearbox of Automatic.

How much does the 2021 Yamaha Neos 4 weigh?

The 2021 Yamaha Neos 4 has a Weight incl. oil, gas, etc of 95.0 kg (209.4 pounds).

What is the seat height of the 2021 Yamaha Neos 4?

The 2021 Yamaha Neos 4 has a Seat height of 790 mm (31.1 inches) If adjustable, lowest setting..

Yamaha Neos 4 - 2021 Specifications and Reviews

Name: 2021 Yamaha Neos 4
Brand: Yamaha

The 2021 Yamaha Neos 4 is an entry-level 50cc scooter designed for urban commuters and new riders seeking affordable, reliable transportation. Powered by a liquid-cooled four-stroke engine with automatic transmission, it delivers practical performance for city riding with minimal maintenance. Known for its compact size, fuel efficiency, and beginner-friendly handling, the Neos 4 excels in congested urban environments.

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2021

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Engine and Transmission Specifications
Transmission type	Belt (final drive)
Gearbox	Automatic
Cooling system	Liquid
Lubrication system	Wet sump
Ignition	TCI
Fuel control	Single Overhead Cams (SOHC)
Fuel system	Injection
Bore x Stroke	38.0 x 43.6 mm (1.5 x 1.7 inches)
Compression	12.0:1
Torque	3.2 Nm (0.3 kgf-m or 2.3 ft.lbs) @ 7000 RPM
Power	3.1 HP (2.2 kW) @ 7000 RPM
Engine type	Single cylinder, four-stroke
Capacity:	49.0 ccm (2.99 cubic inches)


Category	Scooter
Year	2021
Model	Yamaha Neos 4
Brakes, suspension, Frame and wheels
Seat	Stepped dual seat
Wheels	Aalloy wheels
Rear brakes	Expanding brake (drum brake)
Diameter	190 mm (7.5 inches)
Front brakes	Single disc
Rear tire	130/70-12
Front tire	120/70-12
Rear wheel travel	60 mm (2.4 inches)
Rear Suspension	Hydraulic unit swing
Front wheel travel	70 mm (2.8 inches)
Front Suspension	Telescopic fork
Physical measures and capacities
Fuel capacity	5.40 litres (1.43 US gallons)
Wheelbase	1275 mm (50.2 inches)
Ground clearance	154 mm (6.1 inches)
Overall width	663 mm (26.1 inches)
Overall length	1840 mm (72.4 inches)
Overall height	1125 mm (44.3 inches)
Seat height	790 mm (31.1 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	95.0 kg (209.4 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Carrying capacity	Lockable helmet compartment
Instruments	Blue backlit LCD instrument panel
Starter	Electric & kick
Color options	Nimbus Grey, Competition White, Midnight Black

Performance Profile & Rider Fit

3.1 hp

Peak Power

Best For

Track2%

City92%

Cornering30%

Daily Riding80%

Touring10%

Passenger25%

Rider Profile

Best For	Ideal for beginners, learners, or anyone needing a simple, low-risk moped-class scooter for basic mobility.
Purpose	Built purely for short urban hops, errands, and commuting at low speeds rather than any kind of performance riding.
Rider Fit	Its low seat height, light 95 kg weight, and automatic transmission make it extremely easy and unintimidating for riders of almost any size or strength.
Character	A practical, economical, and unassuming little runabout that prioritizes efficiency and ease of use over excitement.
Not Ideal For	Not suitable for highway travel, touring, carrying a passenger comfortably, or any rider seeking speed or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Yamaha Neos 4 Rider Ergonomics Assessment

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Feet:

At 790mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Yamaha Neos 4, with a moderate knee angle of around 100 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2021 Yamaha Neos 4 is a reliable and stylish motorcycle that offers great performance and fuel efficiency. Its 125cc engine provides smooth acceleration and easy handling, making it a great choice for city commuting or weekend rides. The sleek design and comfortable seating make for a pleasant riding experience, while the practical storage compartment under the seat adds to its convenience. With its great fuel economy and low emissions, the Yamaha Neos 4 is also an eco-friendly option for those who are conscious of their environmental impact. In addition to its performance and practicality, the 2021 Yamaha Neos 4 boasts modern features such as LED lighting and a digital display, adding to its overall appeal. Whether you're a beginner rider or a seasoned veteran, this motorcycle offers a fun and versatile option for urban and suburban journeys. With its reliable build and stylish design, the Yamaha Neos 4 is a great choice for anyone in the market for a small displacement scooter.