Built around Chang-Jiang's scooter motorcycle platform, the 2007 Chang-Jiang BD 125T-5A relies on a 150 cc (9.2 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 7.8 HP (5.7 kW) at 7,000 rpm. With a specific output of 52 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the BD 125T-5A measures 101 kg (223 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (12.95 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 6-liter (1.6 US gal) fuel tank paired with a rated consumption of 2.1 L/100 km provides an estimated theoretical range of roughly 286 km (178 miles) between fill-ups, while factory top speed is listed at 80 km/h (50 mph).
Specific Output
52 HP/L
Power-to-Weight
0.08 HP/kg (12.95 kg/HP)
Theoretical Range
~286 km (178 mi)
Engine
Displacement150.0 ccm (9.15 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power7.8 HP (5.7 kW)) @ 7000 RPM
Compression9.2:1
Bore x Stroke52.4 x 57.8 mm (2.1 x 2.3 inches)
IgnitionCDI
CoolingAir
Performance
Top Speed80.0 km/h (49.7 mph)
Fuel Consumption2.10 litres/100 km (47.6 km/l or 112.01 mpg)
Greenhouse Gases48.7 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Wheelbase1290 mm (50.8 inches)
Ground Clearance155 mm (6.1 inches)
Wheels & Brakes
Front Tyre120/70-12
Rear Tyre130/70-12
Front BrakesSingle disc. Hand operation, disc
Rear BrakesExpanding brake (drum brake). Hand operation, drum
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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
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.
