Built around Yamaha's sport motorcycle platform, the 2020 Yamaha YZF R15 utilizes a 155 cc (9.5 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 18.4 HP (13.4 kW) at 10,000 rpm while maximum torque reaches 14.1 Nm (10.4 lb-ft) at 8,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 118.7 HP per liter and a 1,500 rpm working window between peak torque (8,500 rpm) and peak power (10,000 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 R15 measures 142 kg (313 lbs) wet (curb), translating to a power-to-weight ratio of 0.13 HP/kg (7.72 kg per horsepower). Rider ergonomics and chassis geometry center around a 815 mm (32.1 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.
Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 2017 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
118.7 HP/L
Power-to-Weight
0.13 HP/kg (7.72 kg/HP)
Power Band Window
8,500–10,000 rpm
Standover Height
815 mm (32.1 in)
Engine
Displacement155.0 ccm (9.46 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power18.4 HP (13.4 kW)) @ 10000 RPM
Torque14.1 Nm (1.4 kgf-m or 10.4 ft.lbs) @ 8500 RPM
Compression10.6:1
Bore x Stroke58.0 x 58.7 mm (2.3 x 2.3 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTCI
LubricationWet Sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiplate, wet
Chassis
Frame TypeDeltabox
Front SuspensionTelescopic
Rear SuspensionLinked Monocross
Wheelbase1290 mm (50.8 inches)
Ground Clearance170 mm (6.7 inches)
Wheels & Brakes
Front Tyre80/80-17
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
Weight incl.142.0 kg (313.1 pounds)
Seat Height815 mm (32.1 inches) If adjustable, lowest setting.
Overall Height1135 mm (44.7 inches)
Overall Length1990 mm (78.3 inches)
Overall Width725 mm (28.5 inches)
Fuel Capacity12.00 litres (3.17 US gallons)
Oil Capacity1.00 litres (1.06 US quarts)
Other
StarterElectric
Color OptionsRacing Blue, Thunder Grey, Darknight, Black metallic
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.
