Minibikes

2020Thumpstar TSX 125

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The 2020 Thumpstar TSX 125 is a lightweight, beginner-friendly pit bike designed for young riders and those new to off-road motorcycling. Its compact 80kg frame, manageable 125cc power delivery, and responsive handling make it ideal for learning fundamental riding skills in closed courses and recreational settings. Known for its affordability and reliability, the TSX 125 delivers straightforward performance without unnecessary complexity.

Capacity: 125.0 ccm
Engine: Single, four-stroke
Gearbox: 4-speed
Dry weight: 80.0 kg
Seat height: 830 mm
Power: 15.0 HP (11.0 kW)

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Other years 2020 2021 2022

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail82%

Cornering55%

City riding15%

Daily riding10%

Touring5%

Two-up5%

Track10%

Best for: Designed for casual dirt riding, paddock bashing, and learning motocross fundamentals rather than any road use.
Built for: A playful, low-powered pit bike with a simple carbureted single-cylinder engine and basic suspension geared toward fun over performance.
Not ideal for: Not for anyone wanting highway speeds, long-distance travel, or carrying a passenger, as it lacks the power, top speed, and comfort for those roles.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Full specifications

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: Kick

Transmission

Gearbox: 4-speed
Transmission type: Manual

Performance

Top speed: 90.0 km/h (55.9 mph)

Dimensions & weight

Wheelbase: 1260 mm
Seat height: 830 mm
Dry weight: 80.0 kg
Fuel capacity: 3.40 litres

Chassis & suspension

Frame: Tri-Bar
Front suspension: Inverted Telescopic
Rear suspension: VS 1 Linkage U Shock

Brakes & wheels

Front brakes: Single disc. Dual piston hydraulic disc
Front brakes diameter: 220 mm
Rear brakes: Single disc. HSK Single Piston
Front tyre: 70/100-14
Rear tyre: 80/100-12

Other

Color options: Green/Black

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	2020	2021	2022
Capacity	125 cc	125 cc	125 cc
Dry weight	80 kg	80 kg	80 kg
Seat height	830 mm	830 mm	830 mm
Fuel capacity	3.4 L	3.4 L	3.4 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2020 Thumpstar TSX 125 is a powerful and stylish motorcycle that has a lot to offer for riders of all skill levels. Its 125cc engine provides plenty of power for off-road adventures, while its lightweight and nimble design make it easy to maneuver through tough terrain. The bike's suspension system also helps absorb shocks and bumps, providing a smooth and comfortable ride. Plus, the TSX 125's sleek design and bold graphics make it stand out from the crowd. Whether you're a beginner looking to improve your skills or a seasoned rider seeking a new thrill, the 2020 Thumpstar TSX 125 is a great option.

In conclusion, the 2020 Thumpstar TSX 125 is a top-notch motorcycle that delivers on both performance and style. With its powerful engine, agile handling, and eye-catching design, this bike is sure to impress riders of all levels. Whether you're hitting the trails or cruising around town, the TSX 125 is a great choice for those seeking an adrenaline-pumping ride.

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