Motocross Bikes
2012TM Racing MX 125
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The 2012 TM Racing MX 125 is a lightweight two-stroke motocross machine designed for competitive junior and amateur riders seeking a performance-oriented platform. Known for its agile handling and responsive power delivery from the 123cc single-cylinder engine, it features advanced technology including electronic CDI ignition with selectable maps and a V-Force reed valve for optimized performance. Built for serious off-road competition, the MX 125 excels in motocross racing where its precise control and quick acceleration provide a genuine racing advantage.
- Capacity
- 123.5 ccm
- Engine
- Single, two-stroke
- Gearbox
- 5-speed
- Dry weight
- Not on record
Know it? Add it → - Seat height
- 918 mm
- Power
- 15.0 HP (11.0 kW)
What’s new for the 2012 TM Racing MX 125
vs the 2011| Spec | 2011 | 2012 |
|---|---|---|
| Power | 19.9 HP (14.5 kW) @ 7000 RPM | 15.0 HP (11.0 kW) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built exclusively for motocross racing and rough terrain riding rather than any form of road use.
- Built for
- A sharp, aggressive, race-focused two-stroke with premium Italian components that rewards aggressive, skilled inputs.
- Not ideal for
- This is not the right bike for commuting, touring, carrying a passenger, or anyone seeking a comfortable, road-legal, beginner-friendly 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
- 123.5 ccm
- Power
- 15.0 HP (11.0 kW)
- Engine type
- Single, two-stroke
- Bore x stroke
- 54.0 x 54.5 mm
- Compression
- 16.7:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Kokusan CDI Electronic with variable advance with two selectable maps
- Lubrication system
- 3.5% oil mixture
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiple-disk in oil bath with hydraulic control
Dimensions & weight
- Wheelbase
- 1280 mm
- Overall length
- 2030 mm
- Overall width
- 1250 mm
- Overall height
- 1300 mm
- Seat height
- 918 mm
- Fuel capacity
- 8.70 litres
- Ground clearance
- 305 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Perimetral aluminium
- Front suspension
- Marzocchi USD
- Rear suspension
- Sachs Boge (optional Ohlins )
Brakes & wheels
- Front brakes
- Single disc. Wave disk. Nissin pump and caliper
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc. Wave disk. Nissin pump and caliper
- Rear brakes diameter
- 245 mm
- Front tyre
- 80/100-21
- Rear tyre
- 100/90-19
Other
- Color options
- Blue/white
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 | 2005 | 2009 | 2012 | 2016 | 2019 |
|---|---|---|---|---|---|
| Capacity | 124 cc | 124 cc | 124 cc | 124 cc | 124 cc |
| Seat height | 918 mm | 918 mm | 918 mm | 918 mm | 918 mm |
| Fuel capacity | 8 L | 8.7 L | 8.7 L | 8.2 L | 9.5 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 TM Racing MX 125?
The 2012 TM Racing MX 125 has a Capacity of 123.5 ccm (7.54 cubic inches).
What engine power does the TM Racing MX 125 have?
The 2012 TM Racing MX 125 has a Power of 15.0 HP (11.0 kW).
How many gears does the TM Racing MX 125 have?
The 2012 TM Racing MX 125 has a Gearbox of 5-speed.
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