Motocross Bikes

2008TM racing TM Racing MX 125

34 fields on record

The 2008 TM Racing MX 125 is a competitive two-stroke motocross bike engineered for serious junior and amateur racers. Its liquid-cooled 123cc single-cylinder engine delivers sharp power delivery through a five-speed gearbox, while premium suspension options from Marzocchi and Ohlins ensure excellent handling on demanding tracks. Known for reliable performance and race-ready engineering, it remains a proven platform for aspiring motocross competitors.

Capacity: 123.5 ccm
Engine: Single, two-stroke
Gearbox: 5-speed
Dry weight: 364.0 kg
Seat height: 918 mm
Power: 15.0 HP (11.0 kW)

⇄ Compare with another bike All model years

What’s new for the 2008 TM racing TM Racing MX 125

vs the 2007

Spec	2007	2008
Fuel capacity	8.00 litres (2.11 US gallons)	8.70 litres (2.30 US gallons)
Front brakes	Single disc. Nissin pump and Brembo caliper	Single disc
Rear brakes	Single disc. Nissin pump and caliper	Single disc

Other years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail97%

Cornering80%

City riding5%

Daily riding5%

Touring5%

Two-up0%

Track90%

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?

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Your height

Inseam (optional)

Units

At 918mm, a rider of 175cm with a 79cm (estimated) inseam will not reach the ground comfortably on the 2008 TM racing TM Racing MX 125, with a cramped knee angle of around 80 degrees and an upright 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 over 900 mm — Sky High →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 123.5 ccm
Power: 15.0 HP (11.0 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.0412 HP/kg
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
Lubrication system: 3.5% 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
Dry weight: 364.0 kg
Fuel capacity: 8.70 litres
Ground clearance: 305 mm

Chassis & suspension

Frame: Perimetral aluminium section
Front suspension: Marzocchi USD 50mm ( optional Ohlins 48mm )
Rear suspension: Sachs Boge (optional Ohlins )

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 270 mm
Rear brakes: Single disc
Rear brakes diameter: 245 mm
Front tyre: 90/90-X21
Rear tyre: 100/90-X19

Other

Color options: 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	2005	2008	2009	2012	2016	2019
Capacity	124 cc	124 cc	124 cc	124 cc	124 cc	124 cc
Dry weight	364 kg	364 kg	364 kg	364 kg	364 kg	364 kg
Seat height	918 mm	918 mm	918 mm	918 mm	918 mm	918 mm
Fuel capacity	8 L	8.7 L	8.7 L	8.7 L	8.2 L	9.5 L