Positioned in Senke's naked motorcycle lineup, the 2022 Senke SK250-K Alien Monster pairs a 249.8 cc (15.2 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 16.8 HP (12.2 kW) at 7,500 rpm while maximum torque reaches 16.5 Nm (12.2 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 67.3 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.
Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry. The 14-liter (3.7 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 140 km/h (87 mph).
Specific Output
67.3 HP/L
Power Band Window
6,500–7,500 rpm
Standover Height
800 mm (31.5 in)
Engine
Displacement249.8 ccm (15.24 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power16.8 HP (12.2 kW)) @ 7500 RPM
Torque16.5 Nm (1.7 kgf-m or 12.2 ft.lbs) @ 6500 RPM
Bore x Stroke65.5 x 68.2 mm (2.6 x 2.7 inches)
Valves/Cylinder4
Fuel SystemInjection. Bosch EFI
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionC.D.I
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet Multiplate
Performance
Top Speed140.0 km/h (87.0 mph)
Chassis
Frame TypeStreel trellis
Front SuspensionTelescopic fork
Rear SuspensionMonoshock
Wheelbase1410 mm (55.5 inches)
Ground Clearance150 mm (5.9 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Front BrakesSingle disc. ABS
Rear BrakesSingle disc. ABS
Wheels10-spoke, black
Dimensions & Weight
Seat Height800 mm (31.5 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.
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.
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.
