Motocross Bikes
2023Yamaha YZ125X
38 fields on record
The 2023 Yamaha YZ125X is a lightweight two-stroke enduro bike designed for entry-level and intermediate off-road riders seeking an agile, nimble machine. Powered by a 125cc reed-valve single-cylinder engine with liquid cooling, it delivers responsive power delivery ideal for trail riding and cross-country adventures. Known for its compact frame, manageable weight, and proven reliability, the YZ125X excels in technical terrain where handling and maneuverability are paramount.
- Capacity
- 125.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Wet weight
- 96.2 kg
- Seat height
- 970 mm
- Power
- 15.0 HP (11.0 kW)
What’s new for the 2023 Yamaha YZ125X
vs the 2022| Spec | 2022 | 2023 |
|---|---|---|
| Wet weight | 94.8 kg (209.0 pounds) | 96.2 kg (212.1 pounds) |
| Fuel capacity | 8.00 litres (2.11 US gallons) | 6.80 litres (1.80 US gallons) |
| Compression | 8.8:1 | 10.2:1 |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a cross-country/off-road competition machine, essentially a trail-tuned YZ125 motocrosser with wider-ratio gearing and off-road suspension settings.
- Built for
- Raw, high-strung, and reward-driven, this bike delivers sharp, punchy 2-stroke power and razor-sharp agility for riders who like to work the bike hard.
- Not ideal for
- Not for riders seeking comfort, highway capability, passenger accommodation, or a low-maintenance, easy-going ride.
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
- 15.0 HP (11.0 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1559 HP/kg (wet)
- Bore x stroke
- 54.0 x 54.5 mm
- Compression
- 10.2:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- CDI
- Lubrication system
- Premix
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1455 mm
- Overall length
- 2141 mm
- Overall width
- 825 mm
- Overall height
- 1285 mm
- Seat height
- 970 mm
- Wet weight
- 96.2 kg
- Fuel capacity
- 6.80 litres
- Ground clearance
- 351 mm
- Oil capacity
- 0.70 litres
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Semi-double cradle aluminium
- 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)
- 26.8°
- Trail
- 117 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
- 90/90-21
- Rear tyre
- 110/90-18
Other
- Color options
- Team Yamaha Blue
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 | 2017 | 2020 | 2022 | 2023 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 124 cc | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Seat height | 975 mm | 975 mm | 975 mm | 970 mm | 970 mm | 970 mm |
| Fuel capacity | 8 L | 8 L | 8 L | 6.8 L | 6.8 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 YZ125X?
The 2023 Yamaha YZ125X has a Capacity of 125.0 ccm (7.63 cubic inches).
What engine power does the Yamaha YZ125X have?
The 2023 Yamaha YZ125X has a Power of 15.0 HP (11.0 kW).
How many gears does the Yamaha YZ125X have?
The 2023 Yamaha YZ125X has a Gearbox of 6-speed.
How much does the Yamaha YZ125X weigh?
The 2023 Yamaha YZ125X has a Wet weight of 96.2 kg (212.1 pounds).
Shop this bike
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The 2023 Yamaha YZ125X is a top-of-the-line off-road motorcycle that is sure to impress riders of all skill levels. With its lightweight frame and powerful 125cc engine, this bike offers excellent maneuverability and plenty of power for tackling rugged terrain. The YZ125X also features a smooth-shifting 6-speed transmission, high-performance suspension, and high-quality brakes for maximum control and precision. Whether you're a beginner looking to improve your off-road skills or a seasoned rider looking for an agile and responsive bike, the 2023 Yamaha YZ125X is a fantastic choice.
In conclusion, the 2023 Yamaha YZ125X is a standout off-road motorcycle that offers outstanding performance and handling. Its lightweight design, potent engine, and advanced features make it an excellent option for riders who crave adventure and excitement. Whether you're hitting the trails for the first time or seeking a competitive edge in off-road racing, the YZ125X is a top contender in its class. With its impressive performance and advanced features, the 2023 Yamaha YZ125X is a must-have for any off-road enthusiast.
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