Super motard · 2003

ST 125 SM

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MotoLibrary Score

34 /100 Commuter

Power/Weight

0.09 hp/kg

Engine

125 ccm

Technical Overview

2003 Jincheng ST 125 SM Technical Analysis & Specification Breakdown

Built around Jincheng's super motard motorcycle platform, the 2003 Jincheng ST 125 SM features a 125 cc (7.6 cu in) single cylinder, four-stroke configuration. In factory specification, peak output is rated at 11.5 HP (8.4 kW) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 92 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the ST 125 SM measures 123 kg (271 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.7 kg per horsepower).

Specific Output

92 HP/L

Power-to-Weight

0.09 HP/kg (10.7 kg/HP)

Engine

Displacement 125.0 ccm (7.63 cubic inches)

Engine Type Single cylinder, four-stroke

Engine Details Single cylinder, four-stroke

Power 11.5 HP (8.4 kW)) @ 7500 RPM

Transmission

Gearbox 5-speed

Final Drive Chain (final drive)

Wheels & Brakes

Front Tyre 100/80-17

Rear Tyre 120/80-17

Front Brakes Single disc

Rear Brakes Single disc

Dimensions & Weight

Dry Weight 123.0 kg (271.2 pounds)

Power/Weight 0.0935 HP/kg

Before You Compare This Bike

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

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Weight

Compare weight carefully because it affects low-speed handling, parking and confidence.

Brakes

Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.

Transmission

Transmission and final drive affect maintenance, smoothness and everyday usability.

Rider Profile

Who Is This Bike For?

🟢

Beginner

A2 license compatible, manageable power.

🏁

Best For

Sport & Track

⚖️

Handling

Very lightweight — easy to handle

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