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MotoLibrary Score
34/100Commuter
Top Speed
70 km/h
Engine
50 ccm
Technical Overview
2023 Thumpstar TSX 50 JR Technical Analysis & Specification Breakdown
At the heart of the 2023 Thumpstar TSX 50 JR minibike, cross motorcycle, Thumpstar utilizes a 50 cc (3.1 cu in) liquid-cooled single cylinder, two-stroke layout.
On the scales, the TSX 50 JR measures 45 kg (99 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 603 mm (23.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 953 mm (37.5 in) wheelbase engineered for quick, flickable steering geometry. The 1.3-liter (0.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 70 km/h (43 mph).
Standover Height
603 mm (23.7 in)
Engine
Displacement50.0 ccm (3.05 cubic inches)
Engine TypeSingle cylinder, two-stroke
Fuel SystemCarburettor. 19mm
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveChain (final drive)
Performance
Top Speed70.0 km/h (43.5 mph)
ExhaustPipe Bomb
Chassis
Front SuspensionFastace Adjustable Forks
Rear SuspensionFastace Adjustable Shock
Wheelbase953 mm (37.5 inches)
Wheels & Brakes
Front Tyre2.50-10
Rear Tyre2.5-10
Front BrakesSingle disc. 2-piston calipers
Front Brake Ø190 mm (7.5 inches)
Rear BrakesSingle disc
Rear Brake Ø170 mm (6.7 inches)
WheelsAlloy Rim
Dimensions & Weight
Weight incl.45.0 kg (99.2 pounds)
Seat Height603 mm (23.7 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.
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.
