TM Racing SMM 125 - 2012 Specifications and Reviews

The 2012 TM Racing SMM 125 is a lightweight super motard designed for young riders and beginners seeking an agile, nimble machine. Powered by a responsive 123cc two-stroke engine with advanced features like V-Force reed valves and selectable ignition maps, it excels in tight urban environments and dirt-to-tarmac versatility. Known for its excellent handling characteristics and low seat height, the SMM 125 is best suited for riders developing their skills across mixed terrain.

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General information

CategorySuper motard
Year2012
ModelTM Racing SMM 125

Engine and Transmission Specifications

DrivelinePrimary drive: Straight – tooth gear.
ClutchMultiple-disk in oil bath with hydraulic control
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication system3.5% mixture
IgnitionKokusan CDI Electronic with variable advance with two selectable maps
Fuel systemCarburettor. K
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Power7.38
Engine detailsV-Force Reed intake valve
Engine typeSingle cylinder, two-stroke
Capacity:123.50 ccm (7.54 cubic inches)

Brakes, suspension, Frame and wheels

WheelsBlue rims
Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc. Wave disk. Nissin pump and caliper
Front brakes diameter320 mm (12.6 inches)
Front brakesSingle disc. Brenbo radial pump and caliper
Rear tyre dimensions150/60-ZR17
Front tyre dimensions110/70-ZR17
Rear suspensionSachs Boge (optional Ohlins TM )
Front suspensionMarzocchi USD 50 mm
Frame typePerimetral aluminium
 
 

Physical measures and capacities

Fuel capacity8.70 litres (2.30 gallons)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack/white
StarterKick

Performance Profile & Rider Fit

Best For

Track85%
City55%
Cornering95%
Daily Riding30%
Touring15%
Passenger10%

Rider Profile

Best ForThis is a specialist supermoto best suited to experienced riders comfortable with a light, punchy two-stroke that demands active input and precise throttle control.
PurposeBuilt for supermoto-style riding, it excels at flicking between tight corners, hooligan street riding, and trackday-style circuits mixing tarmac with quick direction changes.
Rider FitThe kick-start-only two-stroke, tiny fuel tank, and minimal seating comfort mean riders need decent fitness and tolerance for a stripped-down, race-oriented ergonomic position.
CharacterA raw, aggressive, and playful machine with premium suspension and brake components that reward an aggressive, sporty riding style over relaxed cruising.
Not Ideal ForIt is a poor choice for riders wanting long-distance comfort, passenger capability, gentle beginner-friendly manners, or genuine off-road trail use.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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