Built around Thumpstar's minibike, cross motorcycle platform, the 2021 Thumpstar TSB 125 utilizes a 125 cc (7.6 cu in) single cylinder, four-stroke layout.
On the scales, the TSB 125 measures 80 kg (176 lbs) dry. Rider ergonomics and chassis geometry center around a 750 mm (29.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,230 mm (48.4 in) wheelbase engineered for quick, flickable steering geometry. The 3.4-liter (0.9 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 90 km/h (56 mph).
Standover Height
750 mm (29.5 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Fuel SystemCarburettor. Molkt VM22 26mm
Transmission
Gearbox4-speed
Final DriveChain (final drive)
Performance
Top Speed90.0 km/h (55.9 mph)
ExhaustPipebomb DW1 | 38mm Exhaust
Chassis
Front SuspensionInverted Telescopic
Rear SuspensionVS 1 Linkage U Shock
Wheelbase1230 mm (48.4 inches)
Wheels & Brakes
Front Tyre70/100-14
Rear Tyre80/100-12
Front BrakesSingle disc. Single Piston
Front Brake Ø190 mm (7.5 inches)
Rear BrakesSingle disc. Single Piston
Rear Brake Ø190 mm (7.5 inches)
WheelsAlloy Rim
Dimensions & Weight
Dry Weight80.0 kg (176.4 pounds)
Seat Height750 mm (29.5 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
