Minibikes
2021Thumpstar TSB 125
23 fields on record
The 2021 Thumpstar TSB 125 is a capable minibike designed for beginner riders and youth enthusiasts seeking an affordable entry into off-road riding. Its lightweight frame, responsive 125cc four-stroke engine, and quality suspension components deliver reliable performance across varied terrain. Known for excellent value and durability, it excels as a stepping stone motorcycle for developing fundamental riding skills.
- Capacity
- 125.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 4-speed
- Dry weight
- 80.0 kg
- Seat height
- 750 mm
- Power
- 15.0 HP (11.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed as a small-capacity pit bike or recreational minibike for casual off-road fun, practice, and low-speed play riding rather than serious trail or track use.
- Built for
- It has a playful, nimble, toy-like personality with modest single-cylinder power delivery suited to short bursts of fun rather than sustained speed.
- Not ideal for
- It is not suitable for taller or heavier adult riders, highway use, touring, or anyone expecting meaningful speed or long-distance comfort.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 125.0 ccm
- Power
- 15.0 HP (11.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1875 HP/kg (dry)
- Fuel system
- Carburettor
- Starting
- Electric
Transmission
- Gearbox
- 4-speed
- Transmission type
- Manual
Performance
- Top speed
- 90.0 km/h (55.9 mph)
Dimensions & weight
- Wheelbase
- 1230 mm
- Seat height
- 750 mm
- Dry weight
- 80.0 kg
- Fuel capacity
- 3.40 litres
Chassis & suspension
- Front suspension
- Inverted Telescopic
- Rear suspension
- VS 1 Linkage U Shock
Brakes & wheels
- Front brakes
- Single disc. Single Piston
- Front brakes diameter
- 190 mm
- Rear brakes
- Single disc. Single Piston
- Front tyre
- 70/100-14
- Rear tyre
- 80/100-12
Other
- Color options
- Green/Black
- Comments
- Color change kits sold separately.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the Thumpstar TSB 125?
The 2021 Thumpstar TSB 125 has a Capacity of 125.0 ccm (7.63 cubic inches).
What engine power does the Thumpstar TSB 125 have?
The 2021 Thumpstar TSB 125 has a Power of 15.0 HP (11.0 kW).
How many gears does the Thumpstar TSB 125 have?
The 2021 Thumpstar TSB 125 has a Gearbox of 4-speed.
How much does the Thumpstar TSB 125 weigh?
The 2021 Thumpstar TSB 125 has a Dry weight of 80.0 kg (176.4 pounds).
Shop this bike
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The 2021 Thumpstar TSB 125 motorcycle is a lightweight and nimble off-road bike built for adventure. With its 125cc engine, it delivers plenty of power for tackling tough trails and conquering challenging terrain. The bike's sturdy frame and suspension provide a smooth and stable ride, while its responsive handling makes it easy to maneuver through tight spots. Overall, the TSB 125 offers an exhilarating and reliable off-road experience that is sure to impress riders of all skill levels.
Thumpstar's 2021 TSB 125 is a standout option in the off-road motorcycle market, offering a winning combination of performance and durability. From its powerful engine to its rugged construction, this bike is designed to handle the demands of off-road riding with ease. Whether you're a seasoned rider or just starting out, the TSB 125 is a top choice for anyone looking for a high-quality off-road motorcycle that delivers on both power and handling.
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