Positioned in Serpento's enduro - offroad motorcycle lineup, the 2025 Serpento Viper 250 utilizes a 250 cc (15.3 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 16.7 HP (12.2 kW) at 7,500 rpm while maximum torque reaches 19 Nm (14 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 66.8 HP per liter and a 1,500 rpm working window between peak torque (6,000 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 Viper 250 measures 130 kg (287 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.78 kg per horsepower). Rider ergonomics and chassis geometry center around a 860 mm (33.9 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 2,080 mm (81.9 in) wheelbase engineered for planted straight-line stability. The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 110 km/h (68 mph).
Within MotoLibrary's Serpento archive, this model family spans 2 indexed model years from 2020 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
66.8 HP/L
Power-to-Weight
0.13 HP/kg (7.78 kg/HP)
Power Band Window
6,000–7,500 rpm
Standover Height
860 mm (33.9 in)
Engine
Displacement250.0 ccm (15.26 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power16.7 HP (12.2 kW)) @ 7500 RPM
Torque19.0 Nm (1.9 kgf-m or 14.0 ft.lbs) @ 6000 RPM
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Top Speed110.0 km/h (68.4 mph)
Chassis
Front SuspensionTelescopic fork
Rear SuspensionMonoshock
Wheelbase2080 mm (81.9 inches)
Wheels & Brakes
Front Tyre110/90-19
Rear Tyre4.60-17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight130.0 kg (286.6 pounds)
Power/Weight0.1285 HP/kg
Seat Height860 mm (33.9 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.
