2025
Thumpstar TSX 50 JR
28 fields on record
- Capacity
- 50.0 ccm
- Engine
- Not on record
Know it? Add it → - Gearbox
- Automatic
- Dry weight
- Not on record
Know it? Add it → - Seat height
- 603 mm
- Power
- Not on record
Know it? Add it →
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Kids off-road minibike built for its class - off-road and technical terrain.
- Built for
- A kids off-road minibike from Thumpstar, built around a 50cc engine - a real production model, but this profile is formula-generated from its class and spec sheet rather than individually reviewed.
- Not ideal for
- Not for highway touring or pillion comfort.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 50.0 ccm
- Fuel system
- Carburettor. 19mm
- Cooling system
- Liquid
Transmission
- Gearbox
- Automatic
Dimensions & weight
- Wet weight (incl. fluids)
- 45.0 kg
- Seat height
- 603 mm
- Wheelbase
- 953 mm
- Fuel capacity
- 1.30 litres
Chassis & suspension
- Front suspension
- Fastace Adjustable Forks
- Rear suspension
- Fastace Adjustable Shock
Brakes & wheels
- Front brakes
- Single disc. 2-piston calipers
- Rear brakes
- Single disc
- Wheels
- Alloy Rim
Other
- Model name
- Thumpstar TSX 50 JR
- Year of manufacture
- 2025
- Type
- Minibike, cross
- Type of engine
- Single cylinder, two-stroke
- Top speed
- 70.0 km/h (43.5 mph)
- Transmission type
- Chain (final drive)
- Exhaust system
- Pipe Bomb
- Front tire
- 2.50-10
- Rear tire
- 2.5-10
- Diameter
- 190 mm
- Color options
- Green/black/red
- Starter
- Kick
- Comments
- Chines bike sold in Australia.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|
| Capacity | 50.0 ccm (3.05 cubic inches) | 50.0 ccm (3.05 cubic inches) | 50.0 ccm (3.05 cubic inches) | 50.0 ccm (3.05 cubic inches) |
| Seat height | 603 mm (23.7 inches) | 603 mm (23.7 inches) | 603 mm (23.7 inches) | 603 mm (23.7 inches) |
| Fuel capacity | 1.30 litres (0.34 US gallons) | 1.30 litres (0.34 US gallons) | 1.30 litres (0.34 US gallons) | 1.30 litres (0.34 US gallons) |
| Color options | Green/black/red | Green/black/red | Green/black/red | Green/black/red |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Thumpstar TSX 50 JR?
The 2025 Thumpstar TSX 50 JR has a Capacity of 50.0 ccm (3.05 cubic inches).
Is the Thumpstar TSX 50 JR air cooled or liquid cooled?
The 2025 Thumpstar TSX 50 JR has a Cooling system of Liquid.
How many gears does the Thumpstar TSX 50 JR have?
The 2025 Thumpstar TSX 50 JR has a Gearbox of Automatic.
How much does the Thumpstar TSX 50 JR weigh?
The 2025 Thumpstar TSX 50 JR has a Wet weight (incl. fluids) of 45.0 kg (99.2 pounds).
What is the seat height of the Thumpstar TSX 50 JR?
The 2025 Thumpstar TSX 50 JR has a Seat height of 603 mm (23.7 inches).
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