Jianshe Knight JS125 4X-F2
2008Sportbike

Jianshe Knight JS125 4X-F2

Key specifications

Engine
123 cc
Power
8 HP
Torque
8 Nm
Weight
115 kg
Fuel type
petrol
Fuel capacity
3.8 L
Transmission
5-speed
Seat height
31 mm
Front brakes
Single disc
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 2008 Jianshe Knight JS125 4X-F2, a spirited contender in the sport motorcycle category that seamlessly blends style, agility, and functionality. Designed for urban commuting as well as spirited weekend rides, this model is perfect for both new riders and seasoned enthusiasts looking for an economical, lightweight option. With its sleek lines and aggressive stance, the Knight JS125 captures attention while delivering a performance that belies its modest displacement. At the heart of the Knight JS125 is a robust single-cylinder, four-stroke engine that displaces 123cc. Producing a peppy 8.18 horsepower at 6.0 kW, this motorcycle offers a thrilling ride, especially in city traffic where quick acceleration is key. The engine generates a torque of 8.00 Nm at 5500 RPM, ensuring that the bike is responsive and zippy, making it ideal for those who enjoy a spirited ride. With a compression ratio of 10.0:1 and a 5-speed gearbox, riders can expect smooth shifts and impressive fuel efficiency. Plus, the air-cooled design keeps maintenance simple while enhancing reliability. The Knight JS125 is equipped with practical features that enhance both safety and rider comfort. Its front disc brake provides reliable stopping power, while the rear drum brake ensures a balanced braking system. The bike's dimensions are well-suited for maneuverability; at just 115 kg (253.5 lbs), it’s lightweight and easy to handle, especially in tight urban environments. A comfortable seat height of 775 mm ensures that riders of various sizes can plant their feet firmly on the ground, boosting confidence at stops. Additionally, the dual starting options—electric and kick—offer versatility depending on the rider's preference or battery condition, a thoughtful touch for those who appreciate reliability in their machines. In summary, the 2008 Jianshe Knight JS125 4X-F2 is a charming motorcycle that caters to the needs of practical riders while offering a taste of sportiness. With its reliable performance, user-friendly features, and engaging ride, it's a solid choice for anyone looking to enhance their two-wheeled adventures.

Pros

  • Lightweight and agile: The low weight of 115 kg enhances maneuverability, making it perfect for city riding and tight corners.
  • Economical: With a modest engine size, the Knight JS125 is fuel-efficient, providing an excellent choice for daily commuting.
  • Comfortable seat height: At 775 mm, the seat height is accommodating for riders of various sizes, ensuring a comfortable riding position.

Cons

  • Limited power output: While suitable for urban commuting, the 8.18 HP may not satisfy those looking for high-performance thrills on the open road.
  • Basic braking system: The combination of a front disc and rear drum brake may lack the advanced stopping power offered by modern sport bikes with dual disc setups.
  • Simple instrumentation: The basic dashboard may not provide the range of information that tech-savvy riders expect in newer models.

Technical details

Source specification data

Make
Jianshe
Model
Knight JS125 4X-F2
Category
Sport
Starter
Electric & kick
Power
8.18 HP (6.0 kW))
Clutch
Wet type,muti plate,hand operation
Torque
8.00 Nm (0.8 kgf-m or 5.9 ft.lbs) @ 5500 RPM
Gearbox
5-speed
Ignition
CDI
Bore X Stroke
54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression
10.0:1
Displacement
123.00 ccm (7.51 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Dry Weight
115.0 kg (253.5 pounds)
Seat Height
775 mm (30.5 inches) If adjustable, lowest setting.
Fuel Capacity
14.50 litres (3.83 gallons)
Overall Width
740 mm (29.1 inches)
Overall Height
1,085 mm (42.7 inches)
Overall Length
2,060 mm (81.1 inches)
Ground Clearance
160 mm (6.3 inches)
Power Weight Ratio
0.0711 HP/kg
Rear Tyre
3.00-18
Front Tyre
2.75-18
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Single disc