Positioned in Yamaha's sport motorcycle lineup, the 2011 Yamaha YZF 15 pairs a 149 cc (9.1 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 17 HP (12.4 kW) at 8,500 rpm while maximum torque reaches 15 Nm (11.1 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 114.1 HP per liter and a 1,000 rpm working window between peak torque (7,500 rpm) and peak power (8,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the YZF 15 measures 131 kg (289 lbs) wet (curb), translating to a power-to-weight ratio of 0.13 HP/kg (7.71 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
114.1 HP/L
Power-to-Weight
0.13 HP/kg (7.71 kg/HP)
Power Band Window
7,500–8,500 rpm
Standover Height
790 mm (31.1 in)
Engine
Displacement149.0 ccm (9.09 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power17.0 HP (12.4 kW)) @ 8500 RPM
Torque15.0 Nm (1.5 kgf-m or 11.1 ft.lbs) @ 7500 RPM
Compression10.4:1
Bore x Stroke57.0 x 58.7 mm (2.2 x 2.3 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionT.C.I
LubricationWet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchConstant-mesh wet multi-plate
Chassis
Frame TypeDeltabox Frame
Rake26.0°
Trail100 mm (3.9 inches)
Front SuspensionTelescopic fork
Rear SuspensionLinked type Monocross
Wheelbase1290 mm (50.8 inches)
Ground Clearance160 mm (6.3 inches)
Wheels & Brakes
Front Tyre80/90-17
Rear Tyre100/80-17
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight120.0 kg (264.6 pounds)
Weight incl.131.0 kg (288.8 pounds)
Power/Weight0.1417 HP/kg
Seat Height790 mm (31.1 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.
