At the heart of the 2023 TM Racing MX 85 2T Junior cross - motocross motorcycle, TM Racing relies on a 84.9 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 48.0 x 47.0 mm (1.9 x 1.9 inches).
On the scales, the MX 85 2T Junior measures 72 kg (159 lbs) dry. Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 6-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's TM Racing archive, this model family spans 2 indexed model years from 2023 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
810 mm (31.9 in)
Engine
Displacement84.9 ccm (5.18 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed valve
Bore x Stroke48.0 x 47.0 mm (1.9 x 1.9 inches)
Fuel SystemCarburettor. Keihin 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
DrivelineRegina RX3 chain
Chassis
Frame TypeSelf-tempering aluminium deltabox type single beam with extruded, forged and microcast parts
Front SuspensionMupo Ø 38 mm
Front Travel270 mm (10.6 inches)
Rear SuspensionExtreme Shox
Ground Clearance270 mm (10.6 inches)
Wheels & Brakes
Front Tyre70/100-17
Rear Tyre90/100-14
Front BrakesSingle disc
Front Brake Ø240 mm (9.4 inches)
Rear BrakesSingle disc
Rear Brake Ø190 mm (7.5 inches)
Dimensions & Weight
Dry Weight72.0 kg (158.7 pounds)
Seat Height810 mm (31.9 inches) If adjustable, lowest setting.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
