Thumpstar TSX 140 - 2020 Specifications and Reviews

The 2020 Thumpstar TSX 140 is an entry-level pit bike designed for young riders and beginners seeking affordable off-road fun. Known for its lightweight construction, manageable seat height, and reliable kick-start engine, it excels in tight tracks and beginner-friendly terrain. The bike combines basic suspension and braking systems with a compact wheelbase for easy handling and confidence-building performance.

2020
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General information

CategoryMinibike, sport
Year2020
ModelThumpstar TSX 140

Engine and Transmission Specifications

Transmission typeChain   (final drive)
Fuel systemCarburettor. Mikuni VM22 26mm
Top speed90.0 km/h (55.9 mph)
Engine typeSingle cylinder, four-stroke
Capacity:140.0 ccm (8.54 cubic inches)

Brakes, suspension, Frame and wheels

WheelsAlloy
Rear brakesSingle disc. HSK Single Piston
Diameter220 mm (8.7 inches)
Front brakesSingle disc. Dual piston hydraulic disc
Rear tire80/100-14
Front tire70/100-17
Rear SuspensionVS 1 Linkage U Shock
Front SuspensionInverted Telescopic
 
 

Physical measures and capacities

Fuel capacity3.40 litres (0.90 US gallons)
Wheelbase1260 mm (49.6 inches)
Seat height830 mm (32.7 inches) If adjustable, lowest setting.
Dry weight80.0 kg (176.4 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsGreen/Black

Performance Profile & Rider Fit

55.9 mph
Top Speed

Best For

Track40%
City25%
Cornering70%
Daily Riding15%
Touring5%
Passenger5%

Rider Profile

Best ForThis is a beginner and youth-oriented pit bike, best suited to novice riders or those honing skills off-road rather than experienced highway riders.
PurposeBuilt as a small-capacity minibike for recreational off-road play, pit track fun, and learning bike control rather than serious transportation.
Rider FitIts low dry weight and low-ish seat height make it very manageable for smaller or lighter riders, including teens and shorter adults.
CharacterA light, flickable, low-powered thumper with an inverted fork and disc brakes that give it a scaled-down supermoto feel.
Not Ideal ForNot suitable for riders wanting real top speed, highway capability, long-distance touring, or carrying a passenger.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2020 Thumpstar TSX 140 is a highly impressive motorcycle that offers an exhilarating riding experience. With its powerful 140cc engine, this bike provides ample power for thrilling rides on both dirt tracks and trails. The TSX 140 also features a sturdy and durable frame, making it suitable for riders of all skill levels. The bike's sleek design and comfortable seat allow for easy maneuverability and long hours of riding enjoyment. In addition to its impressive performance capabilities, the 2020 Thumpstar TSX 140 also boasts advanced safety features, including responsive brakes and reliable suspension. These elements work together to ensure a smooth and safe ride, giving riders peace of mind as they explore various terrains. Overall, the TSX 140 is a fantastic motorcycle that offers a perfect balance of power, reliability, and style for riders who are looking to experience the thrill of off-road adventures.
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