Sportbikes
2012Yamaha YZF-R125
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The 2012 Yamaha YZF-R125 is an entry-level sport bike designed for new riders and commuters seeking an affordable, nimble machine. Its lightweight 125cc liquid-cooled engine delivers adequate power for urban riding and highway cruising, while the aggressive YZF styling appeals to riders wanting sportbike aesthetics without premium costs or complexity.
- Capacity
- 124.7 ccm
- Engine
- Single single, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 138.0 kg
- Seat height
- 818 mm
- Power
- 14.8 HP
What’s new for the 2012 Yamaha YZF-R125
vs the 2011| Spec | 2011 | 2012 |
|---|---|---|
| Engine capacity | 124.66 ccm (7.61 cubic inches) | 124.7 ccm (7.61 cubic inches) |
| Power | 14.75 HP | 14.8 HP |
| Torque | 12.24 Nm (1.2 kgf-m or 9.0 ft.lbs) @ 8000 | 12.2 Nm (1.2 kgf-m or 9.0 ft.lbs) |
| Fuel capacity | 13.80 litres (3.65 gallons) | 13.80 litres (3.65 US gallons) |
| Rear suspension | Swingarm (monocross) | Linked monoshock with spring preload adjustment |
| Wheelbase | 1,353 mm (53.3 inches) | 1355 mm (53.3 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily for track riding and high-performance sport road use, with race-derived electronics and chassis geometry prioritizing outright speed and cornering precision.
- Built for
- A razor-sharp, race-bred superbike that rewards commitment and skill with explosive acceleration, crossplane-crank character, and pinpoint cornering ability.
- Not ideal for
- Not suitable for beginners, commuters seeking comfort, or riders wanting a relaxed upright touring or passenger-friendly experience.
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
- 124.7 ccm
- Power
- 14.8 HP
- Torque
- 12.2 Nm (1.2 kgf-m)
- Engine type
- Single single, four-stroke
- Power/weight ratio
- 0.1072 HP/kg
- Bore x stroke
- 52.0 x 58.6 mm
- Compression
- 11.2:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- TCI (digital)
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multiple-disc coil spring
Dimensions & weight
- Wheelbase
- 1355 mm
- Overall length
- 2015 mm
- Overall width
- 660 mm
- Overall height
- 970 mm
- Seat height
- 818 mm
- Wet weight
- 138.0 kg
- Fuel capacity
- 13.80 litres
- Ground clearance
- 155 mm
- Oil capacity
- 1.20 litres
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Steel Deltabox
- Front suspension
- Telescopic forks
- Rear suspension
- Linked monoshock with spring preload adjustment
- Front wheel travel
- 130 mm
- Rear wheel travel
- 125 mm
- Rake (fork angle)
- 24.2°
- Trail
- 86 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 292 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 230 mm
- Front tyre
- 100/80-M17
- Rear tyre
- 130/70-M17
Other
- Color options
- Grey, blue, white
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 | 2008 | 2012 | 2014 | 2018 | 2022 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 124.66 ccm (7.61 cubic inches) | 124.70 ccm (7.61 cubic inches) | 124.70 ccm (7.61 cubic inches) | 124.70 ccm (7.61 cubic inches) | 124.7 ccm (7.61 cubic inches) | 124.7 ccm (7.61 cubic inches) |
| Dry weight | 126.5 kg (278.9 pounds) | — | — | — | — | — |
| Seat height | 818 mm (32.2 inches) | 818 mm (32.2 inches) | 818 mm (32.2 inches) | 818 mm (32.2 inches) | 825 mm (32.5 inches) | 856 mm (33.7 inches) |
| Fuel capacity | 13.80 litres (3.65 gallons) | 13.80 litres (3.65 gallons) | 11.50 litres (3.04 gallons) | 11.50 litres (3.04 gallons) | 11.50 litres (3.04 US gallons) | 17.03 litres (4.50 US gallons) |
| Color options | Blue/white | Grey, blue, white | Grey, blue, red | Tech Black, Race Blu, Radical Red | Icon Blue, Tech Black | Team Yamaha Blue, Matte Raven Black |
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 YZF-R125?
The 2012 Yamaha YZF-R125 has a Capacity of 124.7 ccm (7.61 cubic inches).
What engine power does the Yamaha YZF-R125 have?
The 2012 Yamaha YZF-R125 has a Power of 14.8 HP.
How many gears does the Yamaha YZF-R125 have?
The 2012 Yamaha YZF-R125 has a Gearbox of 6-speed.
What is the torque of the Yamaha YZF-R125?
The 2012 Yamaha YZF-R125 has a Torque of 12.2 Nm (1.2 kgf-m or 9.0 ft.lbs).
How much does the Yamaha YZF-R125 weigh?
The 2012 Yamaha YZF-R125 has a Wet weight of 138.0 kg (304.2 pounds).
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