Minibikes
2023Thumpstar TSX 50 SR
23 fields on record
The 2023 Thumpstar TSX 50 SR is a lightweight minibike designed for young riders and beginners seeking off-road adventure. Powered by a nimble 50cc two-stroke engine with liquid cooling and automatic transmission, it delivers accessible performance with a 70 km/h top speed. Known for its adjustable suspension and affordable entry-level styling, the TSX 50 SR excels as a fun, manageable trail bike for riders building foundational skills.
- Capacity
- 50.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- Not on record
Know it? Add it → - Wet weight
- 56.0 kg
- Seat height
- 660 mm
- Power
- 5.4 HP (4.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for casual backyard and pit-bike style cross riding rather than any serious speed, distance, or road use.
- Built for
- A playful, low-stakes minibike with an automatic gearbox and simple two-stroke pep, designed for fun rather than performance.
- Not ideal for
- This bike is not suitable for highway travel, touring, carrying a passenger, or any rider expecting real speed or 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
- Power
- 5.4 HP (4.0 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.0964 HP/kg (wet)
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
Transmission
- Transmission type
- Automatic
Performance
- Top speed
- 70.0 km/h (43.5 mph)
Dimensions & weight
- Wheelbase
- 1074 mm
- Seat height
- 660 mm
- Wet weight
- 56.0 kg
- Fuel capacity
- 1.30 litres
Chassis & suspension
- Front suspension
- VS1 Adjustable Forks
- Rear suspension
- VS1 Adjustable Shock
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 190 mm
- Rear brakes
- Single disc
- Front tyre
- 2.50-10
- Rear tyre
- 2.5-10
Other
- Color options
- Green/Black
- 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 cc | 50 cc | 50 cc | 50 cc |
| Seat height | 660 mm | 660 mm | 660 mm | 660 mm |
| Fuel capacity | 1.3 L | 1.3 L | 1.3 L | 1.3 L |
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 SR?
The 2023 Thumpstar TSX 50 SR has a Capacity of 50.0 ccm (3.05 cubic inches).
What engine power does the Thumpstar TSX 50 SR have?
The 2023 Thumpstar TSX 50 SR has a Power of 5.4 HP (4.0 kW).
How much does the Thumpstar TSX 50 SR weigh?
The 2023 Thumpstar TSX 50 SR has a Wet weight of 56.0 kg (123.5 pounds).
Shop this bike
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The 2023 Thumpstar TSX 50 SR is a fantastic mini dirt bike that offers impressive performance and durability. With a 50cc engine, it provides plenty of power for young riders to have an exhilarating off-road experience. The bike's sturdy construction and quality components ensure that it can handle rough terrain and provide a smooth riding experience. Additionally, the TSX 50 SR features a sleek and stylish design that is sure to turn heads on the trails.
Overall, the 2023 Thumpstar TSX 50 SR is a top-notch mini dirt bike that delivers on both performance and style. Its reliable 50cc engine and durable construction make it a great choice for young riders looking to have some off-road fun. With its impressive features and eye-catching design, the TSX 50 SR is a standout option in the mini dirt bike market.
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