Motocross Bikes
2019Yamaha YZ125
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The 2019 Yamaha YZ125 is a lightweight two-stroke motocross bike designed for amateur and intermediate off-road riders seeking competitive performance. Known for its responsive power delivery and nimble handling, the YZ125 excels in technical terrain and provides an accessible platform for riders developing their skills. Its compact dimensions and 93.9 kg weight make it ideal for smaller-framed competitors and those transitioning from smaller displacement bikes.
- Capacity
- 125.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 86.2 kg
- Seat height
- 975 mm
- Power
- 33.5 HP (24.5 kW)
What’s new for the 2019 Yamaha YZ125
vs the 2018| Spec | 2018 | 2019 |
|---|---|---|
| Power | 34.0 HP (25.0 kW) | 33.5 HP (24.5 kW) |
| Top speed | — | 96.0 km/h (59.7 mph) |
Other years
2002
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2021
2022
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2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing and aggressive trail riding, not for commuting, road use, or casual leisure riding.
- Built for
- A raw, high-revving 2-stroke racer that rewards precise clutch and throttle control with explosive acceleration and razor-sharp handling on dirt.
- Not ideal for
- Not for beginners, road riders, passengers, or anyone wanting comfort, storage, or long-distance capability.
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
- 125.0 ccm
- Power
- 33.5 HP (24.5 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.3886 HP/kg (dry)
- Bore x stroke
- 54.0 x 54.5 mm
- Compression
- 10.7:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- CDI
- Lubrication system
- Premix
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate wet clutch
Performance
- Top speed
- 96.0 km/h (59.7 mph)
Dimensions & weight
- Wheelbase
- 1443 mm
- Overall length
- 2136 mm
- Overall width
- 828 mm
- Overall height
- 1295 mm
- Seat height
- 975 mm
- Dry weight
- 86.2 kg
- Wet weight
- 93.9 kg
- Fuel capacity
- 8.00 litres
- Ground clearance
- 366 mm
- Oil capacity
- 0.70 litres
Chassis & suspension
- Frame
- Semi-double cradle aluminium frame
- Front suspension
- KYB® Speed-Sensitive System inverted fork; fully adjustable
- Rear suspension
- KYB® single shock; fully adjustable
- Front wheel travel
- 300 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 26.0°
- Trail
- 109 mm
Brakes & wheels
- Front brakes
- Single disc. Hydraulic.
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc. Hydraulic.
- Rear brakes diameter
- 245 mm
- Front tyre
- 80/100-21
- Rear tyre
- 100/90-19
Other
- Color options
- Team Yamaha Blue
Specs last verified against published sources: .
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 | 2002 | 2008 | 2015 | 2019 | 2021 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 124 cc | 124 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Dry weight | 88 kg | 86 kg | 86 kg | 86 kg | 86 kg | 86 kg |
| Seat height | 994 mm | 998 mm | 975 mm | 975 mm | 975 mm | 980 mm |
| Fuel capacity | 7.9 L | 7.9 L | 8 L | 8 L | 8 L | 6.8 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha YZ125?
The 2019 Yamaha YZ125 has a Capacity of 125.0 ccm (7.63 cubic inches).
What engine power does the Yamaha YZ125 have?
The 2019 Yamaha YZ125 has a Power of 33.5 HP (24.5 kW).
How many gears does the Yamaha YZ125 have?
The 2019 Yamaha YZ125 has a Gearbox of 6-speed.
How much does the Yamaha YZ125 weigh?
The 2019 Yamaha YZ125 has a Dry weight of 86.2 kg (190.0 pounds).
Shop this bike
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The 2019 Yamaha YZ125 is a powerful and nimble motocross bike that delivers top-notch performance on the track. With its 125cc liquid-cooled two-stroke engine, this motorcycle offers impressive acceleration and responsive handling. The YZ125 also features a lightweight aluminum frame and adjustable suspension, allowing riders to tackle even the toughest terrain with ease. Whether you're a seasoned racer or a beginner looking to get into motocross, the Yamaha YZ125 has the power and agility to take your riding to the next level.
The 2019 Yamaha YZ125 is a standout in the motocross world, offering riders a winning combination of power, agility, and reliability. With its sleek design and cutting-edge technology, this motorcycle is sure to turn heads on the track. Whether you're competing in races or hitting the trails for a weekend ride, the Yamaha YZ125 is a top choice for any motocross enthusiast.
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