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Naked Motorcycles

2020Yamaha YS125

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The 2020 Yamaha YS125 is a lightweight two-stroke allrounder designed for riders seeking an affordable, nimble machine. Powered by a 125cc reed-valve engine producing 10.5 horsepower, it excels in urban commuting and recreational riding. Its liquid-cooled construction and simple carburetor setup deliver reliable performance with minimal maintenance demands.

Capacity: 125.0 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Wet weight: 129.0 kg
Seat height: 795 mm
Power: 10.5 HP (7.6 kW) @ 7500 RPM

⇄ Compare with another bike ＋ Add to garage All model years

What’s new for the 2020 Yamaha YS125

vs the 2019

Spec	2019	2020
Gearbox	5-speed	6-speed
Front suspension	Telescopic forks	Telescopic fork
Rear suspension	Swingarm	Swing arm
Front brakes	Single disc	Single disc. Hydraulic.
Rear brakes	Expanding brake (drum brake)	Expanding brake (drum brake). Hydraulic.

Other years 2018 2019 2020 2021

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering55%

City riding88%

Daily riding82%

Touring30%

Two-up25%

Track10%

Best for: Built primarily for commuting and city riding rather than performance or long-distance travel.
Built for: 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.

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

Will it fit you?

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Your height

Inseam (optional)

Units

At 795mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2020 Yamaha YS125, with a moderate knee angle of around 115 degrees and a forward-leaning 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: 125.0 ccm
Power: 10.5 HP (7.6 kW) @ 7500 RPM
Torque: 10.8 Nm (1.1 kgf-m) @ 6000 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.0814 HP/kg (wet)
Bore x stroke: 54.4 x 57.9 mm
Compression: 10.0:1
Cooling system: Air
Fuel system: Injection
Starting: Electric
Ignition: CDI
Valves per cylinder: 2
Lubrication system: Wet Sump

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain

Dimensions & weight

Wheelbase: 1320 mm
Overall length: 2005 mm
Overall width: 735 mm
Overall height: 1050 mm
Seat height: 795 mm
Wet weight: 129.0 kg
Fuel capacity: 14.00 litres
Ground clearance: 150 mm
Oil capacity: 1.20 litres
Dry weight: Not on record - add it

Chassis & suspension

Frame: Steel, diamond shaped
Front suspension: Telescopic fork
Rear suspension: Swing arm
Front wheel travel: 120 mm
Rear wheel travel: 112 mm
Rake (fork angle): 26.8°
Trail: 117 mm

Brakes & wheels

Front brakes: Single disc. Hydraulic.
Front brakes diameter: 245 mm
Rear brakes: Expanding brake (drum brake). Hydraulic.
Rear brakes diameter: 130 mm
Front tyre: 2.75-18
Rear tyre: 100/80-18

Other

Color options: Red/Black

Specs last verified against published sources: October 2026.

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	2018	2019	2020	2021
Capacity	125 cc	125 cc	125 cc	125 cc
Seat height	795 mm	795 mm	795 mm	795 mm
Fuel capacity	14 L	14 L	14 L	14 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 2020 Yamaha YS125 is a reliable and efficient motorcycle that is perfect for daily commuting. With its 125cc engine, this bike offers excellent fuel efficiency, making it an ideal choice for those who want to save on their daily transportation costs. The YS125 also features a sleek and modern design, along with a comfortable riding position, making it a great option for riders of all levels of experience.

In addition to its practicality, the 2020 Yamaha YS125 also delivers a smooth and enjoyable ride. Its lightweight frame and agile handling make it easy to maneuver through city streets, while its responsive braking system provides added safety and confidence on the road. Overall, the YS125 is a solid choice for anyone in need of a dependable and economical motorcycle for their daily travels.

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