Built around Yamaha's naked motorcycle platform, the 2017 Yamaha FZ25 pairs a 249 cc (15.2 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 20.9 HP (15.3 kW) at 8,000 rpm while maximum torque reaches 20 Nm (14.8 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 83.9 HP per liter and a 2,000 rpm working window between peak torque (6,000 rpm) and peak power (8,000 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 FZ25 measures 148 kg (326 lbs) dry, translating to a power-to-weight ratio of 0.14 HP/kg (7.08 kg per horsepower). Rider ergonomics and chassis geometry center around a 795 mm (31.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,360 mm (53.5 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.
Specific Output
83.9 HP/L
Power-to-Weight
0.14 HP/kg (7.08 kg/HP)
Power Band Window
6,000–8,000 rpm
Standover Height
795 mm (31.3 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power20.9 HP (15.3 kW)) @ 8000 RPM
Torque20.0 Nm (2.0 kgf-m or 14.8 ft.lbs) @ 6000 RPM
Compression9.8:1
Bore x Stroke74.0 x 58.0 mm (2.9 x 2.3 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet,multiple disc
Chassis
Front SuspensionCoil spring/Hydraulic Damper
Rear SuspensionCoil spring/Hydraulic Damper
Wheelbase1360 mm (53.5 inches)
Wheels & Brakes
Front Tyre100/80-17
Rear Tyre140/70-17
Front BrakesSingle disc
Front Brake Ø282 mm (11.1 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight148.0 kg (326.3 pounds)
Power/Weight0.1412 HP/kg
Seat Height795 mm (31.3 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.
