Engineered by Jianshe for the sport motorcycle segment, the 2008 Jianshe Knight JS125 6A pairs a 123 cc (7.5 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, maximum torque reaches 8 Nm (5.9 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. Internal engine geometry specifies a bore and stroke of 54.0 x 54.0 mm (2.1 x 2.1 inches) with a 10.0:1 compression ratio.
On the scales, the Knight JS125 6A measures 127 kg (280 lbs) dry. Rider ergonomics and chassis geometry center around a 775 mm (30.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
775 mm (30.5 in)
Engine
Displacement123.0 ccm (7.51 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Torque8.0 Nm (0.8 kgf-m or 5.9 ft.lbs) @ 5500 RPM
Compression10.0:1
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Fuel SystemCarburettor
IgnitionCDI
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet type,muti plate,hand operation
Chassis
Wheelbase1290 mm (50.8 inches)
Ground Clearance160 mm (6.3 inches)
Wheels & Brakes
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight127.0 kg (280.0 pounds)
Seat Height775 mm (30.5 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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
