Built around Yamaha's enduro - offroad motorcycle platform, the 2011 Yamaha Serow 250 25th Anniversary Special features a 249 cc (15.2 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 18.8 HP (13.7 kW) at 7,500 rpm while maximum torque reaches 19 Nm (14 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 75.5 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 Serow 250 25th Anniversary Special measures 115 kg (254 lbs) dry, translating to a power-to-weight ratio of 0.16 HP/kg (6.12 kg per horsepower). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 10-liter (2.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
75.5 HP/L
Power-to-Weight
0.16 HP/kg (6.12 kg/HP)
Power Band Window
6,500–7,500 rpm
Standover Height
810 mm (31.9 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power18.8 HP (13.7 kW)) @ 7500 RPM
Torque19.0 Nm (1.9 kgf-m or 14.0 ft.lbs) @ 6500 RPM
Compression9.5:1
Bore x Stroke74.0 x 58.0 mm (2.9 x 2.3 inches)
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Driveline5-speed constant mesh
Chassis
Rake26.5°
Trail105 mm (4.1 inches)
Front SuspensionTelescopic forks
Rear SuspensionSwing arm
Ground Clearance285 mm (11.2 inches)
Wheels & Brakes
Front Tyre2.75-21
Rear Tyre120/80-18
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight115.0 kg (253.5 pounds)
Power/Weight0.1632 HP/kg
Seat Height810 mm (31.9 inches) If adjustable, lowest setting.
Overall Length2070 mm (81.5 inches)
Overall Width805 mm (31.7 inches)
Fuel Capacity10.00 litres (2.64 US gallons)
Other
StarterElectric
Notes
Also called XT250 25th Anniversary Special. Limited edition model. Sold in Japan.
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.
