Thumpstar TSX 50 JR - Specifications & Review

TSX 50 JR

Article Complete Info

Articleid937766
CategoryMinibike-cross
MakeThumpstar
ModelTSX 50 JR
Year2023

Chassis, Suspension, Brakes & Wheels

FrontbrakesSingle disc. 2-piston calipers
Frontbrakesdiameter190 mm (7.5 inches)
FrontsuspensionFastace Adjustable Forks
Fronttyre2.50-10
RearbrakesSingle disc
Rearbrakesdiameter170 mm (6.7 inches)
RearsuspensionFastace Adjustable Shock
Reartyre2.5-10
WheelsAlloy Rim

Engine & Transmission

CoolingsystemLiquid
Displacement50.0 ccm (3.05 cubic inches)
EnginetypeSingle cylinder, two-stroke
ExhaustsystemPipe Bomb
FuelsystemCarburettor. 19mm
GearboxAutomatic
Topspeed70.0 km/h (43.5 mph)
TransmissiontypefinaldriveChain (final drive)

Other Specifications

ColoroptionsGreen/black/red
CommentsChines bike sold in Australia.
StarterKick

Physical Measures & Capacities

Fuelcapacity1.30 litres (0.34 US gallons)
Seatheight603 mm (23.7 inches) If adjustable, lowest setting.
Weightincloilgasetc45.0 kg (99.2 pounds)

About Thumpstar

Country of Origin: Australia (brand/design); manufacturing via Asia
Founder: Established by Australian off-road enthusiasts
Best Known For: Pit bikes, minis, and value off-roaders for training and play

Company History

Thumpstar built a global following with affordable, abuse-tolerant pit bikes and small off-roaders. The appeal is simple: tractable four-stroke singles, rebuildable suspension, and spares stocked by responsive distributors. Parents and track schools use them to teach clutch, braking, and body position; racers use them for cross-training. Iterative improvements to frames, hubs, and looms boosted durability, turning budget playbikes into trusted training tools.

Other Years

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