What category is the 2021 Yamaha YS125?

The 2021 Yamaha YS125 has a Category of Allround.

What is the engine size of the 2021 Yamaha YS125?

The 2021 Yamaha YS125 has a Capacity: of 125.0 ccm (7.63 cubic inches).

What type of engine does the 2021 Yamaha YS125 have?

The 2021 Yamaha YS125 has a Engine type of Single cylinder, two-stroke.

What is the engine power of the 2021 Yamaha YS125?

The 2021 Yamaha YS125 has a Power of 10.5 HP (7.6 kW) @ 7500 RPM.

What is the torque of the 2021 Yamaha YS125?

The 2021 Yamaha YS125 has a Torque of 10.8 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 6000 RPM.

Is the 2021 Yamaha YS125 air cooled or liquid cooled?

The 2021 Yamaha YS125 has a Cooling system of Air.

How many gears does the 2021 Yamaha YS125 have?

The 2021 Yamaha YS125 has a Gearbox of 6-speed.

What is the fuel consumption of the 2021 Yamaha YS125?

The 2021 Yamaha YS125 has a Fuel consumption of 2.00 litres/100 km (50.0 km/l or 117.61 mpg).

How much does the 2021 Yamaha YS125 weigh?

The 2021 Yamaha YS125 has a Weight incl. oil, gas, etc of 129.0 kg (284.4 pounds).

What is the seat height of the 2021 Yamaha YS125?

The 2021 Yamaha YS125 has a Seat height of 795 mm (31.3 inches) If adjustable, lowest setting..

Yamaha YS125 - 2021 Specifications and Reviews

Name: 2021 Yamaha YS125
Brand: Yamaha
Rating: 3.7 (3 reviews)

The 2021 Yamaha YS125 is an air-cooled, two-stroke commuter designed for entry-level and budget-conscious riders seeking reliable everyday transportation. Its 125cc single-cylinder engine delivers modest power output suitable for city riding and light highway use. Known for simplicity, fuel efficiency, and affordability, it excels as an accessible first motorcycle or practical utility bike.

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General information
Category	Allround
Year	2021
Model	Yamaha YS125

Engine and Transmission Specifications
Greenhouse gases	46.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption	2.00 litres/100 km (50.0 km/l or 117.61 mpg)
Clutch	O-ring chain
Transmission type	Chain (final drive)
Gearbox	6-speed
Cooling system	Air
Lubrication system	Wet Sump
Ignition	TCI
Fuel control	Single Overhead Cams (SOHC)
Fuel system	Injection
Bore x Stroke	54.4 x 57.9 mm (2.1 x 2.3 inches)
Compression	10.0:1
Torque	10.8 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 6000 RPM
Power	10.5 HP (7.6 kW) @ 7500 RPM
Engine details	Reed-valve-inducted
Engine type	Single cylinder, two-stroke
Capacity:	125.0 ccm (7.63 cubic inches)

Brakes, suspension, Frame and wheels
Rear brakes	Expanding brake (drum brake). Hydraulic.
Diameter	245 mm (9.6 inches)
Front brakes	Single disc. Hydraulic.
Rear tire	100/80-18
Front tire	2.75-18
Rear wheel travel	112 mm (4.4 inches)
Rear Suspension	Swing arm
Front wheel travel	120 mm (4.7 inches)
Front Suspension	Telescopic fork
Trail	117 mm (4.6 inches)
Rake (fork angle)	26.8°
Physical measures and capacities
Fuel capacity	14.00 litres (3.70 US gallons)
Wheelbase	1320 mm (52.0 inches)
Ground clearance	150 mm (5.9 inches)
Overall width	735 mm (28.9 inches)
Overall length	2005 mm (78.9 inches)
Overall height	1050 mm (41.3 inches)
Seat height	795 mm (31.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	129.0 kg (284.4 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Starter	Electric
Color options	Power red, Competition White, Midnight Black

Performance Profile & Rider Fit

10.5 hp

Peak Power

Best For

Track10%

City88%

Cornering55%

Daily Riding82%

Touring30%

Passenger25%

Rider Profile

Best For	Ideal for beginners or learner-permit riders who want a light, unintimidating bike to build confidence on.
Purpose	Built primarily for commuting and city riding rather than performance or long-distance travel.
Rider Fit	Its low seat height and light 129 kg weight make it very manageable for shorter or less experienced riders.
Character	A friendly, economical, and easy-going small-capacity bike that prioritizes practicality over excitement.
Not Ideal For	Not suited for highway touring, carrying a passenger comfortably, or riders seeking strong acceleration.

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

Rider Fit Visualizer

2021 Yamaha YS125 Rider Ergonomics Assessment

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Feet:

At 795mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Yamaha YS125, with a moderate knee angle of around 115 degrees and a forward-leaning 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 YS125 is a stylish and compact motorcycle that delivers exceptional performance and fuel efficiency. With a sleek and modern design, this bike is perfect for urban commuters and first-time riders. The YS125 is equipped with a responsive 125cc engine that provides smooth acceleration and makes for an enjoyable riding experience. Additionally, its lightweight and agile handling make it easy to maneuver through city streets and traffic. Yamaha has also incorporated advanced safety features into the YS125, including a reliable braking system and responsive suspension, ensuring a secure and stable ride. Furthermore, the motorcycle's fuel-efficient engine makes it an economical choice for daily commuting. Overall, the 2021 Yamaha YS125 is a practical and reliable motorcycle that offers great value for riders looking for a stylish and efficient urban commuter.