Built around Keeway's scooter motorcycle platform, the 2018 Keeway Sip 125 features a 123.6 cc (7.5 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 8.1 HP (5.9 kW) at 7,500 rpm while maximum torque reaches 9 Nm (6.6 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 65.5 HP per liter and a 1,000 rpm working window between peak torque (6,500 rpm) and peak power (7,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Sip 125 measures 95 kg (209 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (11.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 755 mm (29.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 4.9-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Keeway archive, this model family spans 2 indexed model years from 2018 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
65.5 HP/L
Power-to-Weight
0.09 HP/kg (11.73 kg/HP)
Power Band Window
6,500–7,500 rpm
Standover Height
755 mm (29.7 in)
Engine
Displacement123.6 ccm (7.54 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power8.1 HP (5.9 kW)) @ 7500 RPM
Torque9.0 Nm (0.9 kgf-m or 6.6 ft.lbs) @ 6500 RPM
Compression9.0:1
Bore x Stroke53.5 x 55.0 mm (2.1 x 2.2 inches)
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionC.D.I
LubricationPressure splash lubrication
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineCVT
Chassis
Frame TypeChine type
Front SuspensionTelescopic coil spring oil damped
Front Travel80 mm (3.1 inches)
Rear SuspensionSingle damper
Rear Travel85 mm (3.3 inches)
Wheels & Brakes
Front Tyre70/90-14
Rear Tyre80/90-14
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight95.0 kg (209.4 pounds)
Power/Weight0.0847 HP/kg
Seat Height755 mm (29.7 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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
