Built around TM Racing's cross - motocross motorcycle platform, the 2011 TM Racing MX 85 Junior relies on a 85 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 47.9 x 47.0 mm (1.9 x 1.9 inches) with a 17.2:1 compression ratio.
The 7-liter (1.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's TM Racing archive, this model family spans 6 indexed model years from 2005 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Engine
Displacement85.0 ccm (5.19 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed valve
Compression17.2:1
Bore x Stroke47.9 x 47.0 mm (1.9 x 1.9 inches)
Fuel SystemCarburettor. Mikuni 28
IgnitionKokusan CDI Electronic with variable advance
Lubrication3.5% oil mixture
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiple-disk in oil bath with hydraulic control
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
