Jianshe Knight JS125 6A - 2008 Specifications and Reviews

The 2008 Jianshe Knight JS125 6A is an entry-level sport motorcycle ideal for new riders seeking affordable performance. Powered by a 123cc air-cooled single-cylinder engine with 5-speed transmission, it delivers nimble handling and reliable daily commuting capability. Known for its practical design and budget-friendly pricing, this lightweight sportster remains popular among beginner enthusiasts in developing markets.

2008
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General information

CategorySport
Year2008
ModelJianshe Knight JS125 6A

Engine and Transmission Specifications

ClutchWet type,muti plate,hand operation
Transmission typefinal driveChain
Gearbox5-speed
Cooling systemAir
StarterElectric & kick
IgnitionCDI
Fuel systemCarburettor
Bore x stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression10.0:1
Torque8.00
Stroke4
Engine typeSingle cylinder
Capacity:123.00 ccm (7.51 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,290 mm (50.8 inches)
Ground clearance160 mm (6.3 inches)
Overall width745 mm (29.3 inches)
Overall length1,980 mm (78.0 inches)
Overall height1,140 mm (44.9 inches)
Seat height775 mm (30.5 inches) If adjustable, lowest setting.
Dry weight127.0 kg (280.0 pounds)
 
 

Jianshe Knight JS125 6A dimensions and frame

Rear brakesExpanding brake (drum brake)
Front brakesSingle disc

Speed and acceleration

Color optionsRed
Fuel capacity17.00 litres (4.49 gallons)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track20%
City70%
Cornering45%
Daily Riding60%
Touring25%
Passenger30%

Rider Profile

Best ForThis small-displacement single-cylinder sport bike is well suited to beginners and new riders building confidence.
PurposeIt's designed as an entry-level sport-styled commuter for light city riding rather than serious performance.
Rider FitIts low seat height and light dry weight make it very approachable for shorter or less experienced riders.
CharacterIt has a nimble, lightweight feel with modest torque delivery typical of a 125cc air-cooled single.
Not Ideal ForIt's not a good fit for experienced riders seeking high speed, long-distance touring comfort, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2008 Jianshe Knight JS125 6A Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 775mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2008 Jianshe Knight JS125 6A, with a cramped knee angle of around 65 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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