14 August. Friday 2026
Jianshe Knight JS125-28 - 2008 Specifications and Reviews
The 2008 Jianshe Knight JS125-28 is a lightweight 125cc sport bike designed for beginner riders and commuters seeking an affordable, reliable entry-level machine. Powered by a simple air-cooled single-cylinder engine with 8.18 horsepower, it delivers adequate performance for urban riding and casual street use. Known for its practical 5-speed transmission and accessible handling characteristics, this Chinese-made sport bike suits new riders building foundational motorcycle skills.
2008
General information | |
| Category | Sport |
| Year | 2008 |
| Model | Jianshe Knight JS125-28 |
| | |
Engine and Transmission Specifications | |
| Clutch | Wet type,muti plate, hand operation |
| Gearbox | 5-speed |
| Cooling system | Air |
| Starter | Electric & kick |
| Ignition | CDI |
| Fuel system | Carburettor |
| Bore x stroke | 54.0 x 54.0 mm (2.1 x 2.1 inches) |
| Compression | 10.0:1 |
| Torque | 8.00 |
| Power | 8.18 |
| Stroke | 4 |
| Engine type | Single cylinder |
| Capacity: | 123.00 ccm (7.51 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 1,300 mm (51.2 inches) |
| Ground clearance | 160 mm (6.3 inches) |
| Overall width | 740 mm (29.1 inches) |
| Overall length | 2,050 mm (80.7 inches) |
| Overall height | 1,180 mm (46.5 inches) |
| Seat height | 775 mm (30.5 inches) If adjustable, lowest setting. |
| Dry weight | 125.0 kg (275.6 pounds) |
Jianshe Knight JS125-28 dimensions and frame | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes | Single disc |
| Frame type | Steel |
| | |
Speed and acceleration | |
| Power/weight ratio | 0.0654 HP/kg |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Fuel capacity | 14.50 litres (3.83 gallons) |
Performance Profile & Rider Fit
8.2 hp
Peak Power
Best For
Track15%
City70%
Cornering45%
Daily Riding60%
Touring25%
Passenger30%
Rider Profile
| Best For | This small-displacement single is best suited to beginners or riders wanting a light, unintimidating machine to build confidence on. |
| Purpose | It's styled as a sport bike but its low power output makes it more of a commuter or learner runabout than a genuine performance machine. |
| Rider Fit | The low seat height and light dry weight make it very manageable for shorter or lighter riders and easy to handle at low speeds. |
| Character | Simple, economical, and easy-going, with modest carbureted single-cylinder power that rewards smooth, unhurried riding. |
| Not Ideal For | It is not for experienced riders seeking real acceleration, sustained highway speeds, or long-distance touring comfort. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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