TM Racing MX 300 - 2012 Specifications and Reviews

The 2012 TM Racing MX 300 is a competitive motocross machine designed for intermediate to advanced riders seeking a lightweight, nimble platform. Powered by a potent 294cc liquid-cooled two-stroke engine with a V-Force reed valve and selectable ignition maps, it delivers responsive power delivery across the rev range. Best known for its sharp handling and proven reliability in amateur and semi-professional racing, the MX 300 remains a popular choice for serious off-road competitors.

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General information

CategoryCross / motocross
Year2012
ModelTM Racing MX 300
 
 

Engine and Transmission Specifications

DrivelinePrimary drive: Straight – tooth gear
ClutchMultiple-disk in oil bath with hydraulic control
Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
Lubrication system3.5% mixture
IgnitionKokusan CDI Electronic with variable advance with two selectable maps
Fuel controlSOHC
Fuel systemCarburettor. Keihin PWM 38
Bore x stroke72.0 x 72.0 mm (2.8 x 2.8 inches)
Engine detailsV-Force Reed intake valve
Engine typeSingle cylinder, two-stroke
Capacity:294.00 ccm (17.94 cubic inches)

Brakes, suspension, Frame and wheels

WheelsBlue rims.
Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc. Braking wave disk. With Nissin pump and caliper
Front brakes diameter270 mm (10.6 inches)
Front brakesSingle disc. Braking wave disk. With Nissin pump and caliper
Rear tyre dimensions100/90-19
Front tyre dimensions80/100-21
Rear suspensionSachs Boge, optional Ohlins
Front suspensionMarzocchi USD 50mm
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 optionsBlue/white

Performance Profile & Rider Fit

Best For

Track85%
City5%
Cornering88%
Daily Riding8%
Touring8%
Passenger5%

Rider Profile

Best ForThis is a purebred competition two-stroke best suited to experienced off-road or motocross riders comfortable with a peaky, aggressive power delivery and no electric starter.
PurposeBuilt purely for motocross and cross-country racing, not for street use or commuting.
Rider FitDemands a fit, athletic rider able to stand, shift weight actively, and kick-start the bike, as it has no mirrors, lights, or passenger accommodations.
CharacterA light, razor-sharp, high-revving two-stroke that rewards aggressive riding and rewards technical skill with explosive acceleration and exceptional agility.
Not Ideal ForNot suitable for beginners, daily commuting, road riding, or anyone seeking comfort, touring range, or a passenger seat.

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

Rider Reviews

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