14 August. Friday 2026
Thumpstar TSB 125 - 2021 Specifications and Reviews
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.
2021
General information | |
| Category | Minibike, cross |
| Year | 2021 |
| Model | Thumpstar TSB 125 |
Engine and Transmission Specifications | |
| Exhaust system | Pipebomb DW1 | 38mm Exhaust |
| Transmission type | Chain (final drive) |
| Gearbox | 4-speed |
| Fuel system | Carburettor. Molkt VM22 26mm |
| Top speed | 90.0 km/h (55.9 mph) |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 125.0 ccm (7.63 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Alloy Rim |
| Rear brakes | Single disc. Single Piston |
| Diameter | 190 mm (7.5 inches) |
| Front brakes | Single disc. Single Piston |
| Rear tire | 80/100-12 |
| Front tire | 70/100-14 |
| Rear Suspension | VS 1 Linkage U Shock |
| Front Suspension | Inverted Telescopic |
Physical measures and capacities | |
| Fuel capacity | 3.40 litres (0.90 US gallons) |
| Wheelbase | 1230 mm (48.4 inches) |
| Seat height | 750 mm (29.5 inches) If adjustable, lowest setting. |
| Dry weight | 80.0 kg (176.4 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Color change kits sold separately. |
| Starter | Electric |
| Color options | Green/Black |
Performance Profile & Rider Fit
55.9 mph
Top Speed
Best For
Track20%
City20%
Cornering40%
Daily Riding15%
Touring5%
Passenger5%
Rider Profile
| Best For | This is best suited to beginners, young riders, or those new to off-road minibikes rather than experienced riders seeking performance. |
| Purpose | 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. |
| Rider Fit | Its low seat height and very light dry weight make it extremely accessible for smaller or shorter riders and easy to manhandle at low speeds. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
Shop This Bike
Rider Reviews
Total comments: 1
MotorcycleDB Review
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.Add a Comment
Related Motorcycle Specifications
More Thumpstar Motorcycles
- Motorcycles in database: 45863
- Technical specifications: 1490298
- Images of motorcycles: 72681
- Videos: 339
- Manufacturers: 501
Please Login or Register if you would like to leave a comment.