Positioned in Yamaha's sport motorcycle lineup, the 2018 Yamaha YZF-R6 relies on a 599 cc (36.6 cu in) liquid-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 123.5 HP (90.1 kW) at 14,500 rpm while maximum torque reaches 67.5 Nm (49.8 lb-ft) at 10,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 206.2 HP per liter and a 4,000 rpm working window between peak torque (10,500 rpm) and peak power (14,500 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the YZF-R6 measures 190.1 kg (419 lbs) wet (curb), translating to a power-to-weight ratio of 0.65 HP/kg (1.54 kg per horsepower). Rider ergonomics and chassis geometry center around a 851 mm (33.5 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,374 mm (54.1 in) wheelbase engineered for quick, flickable steering geometry. The 17.03-liter (4.5 US gal) fuel tank paired with a rated consumption of 6.6 L/100 km provides an estimated theoretical range of roughly 258 km (160 miles) between fill-ups.
Within MotoLibrary's Yamaha archive, this model family spans 23 indexed model years from 1999 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
206.2 HP/L
Power-to-Weight
0.65 HP/kg (1.54 kg/HP)
Power Band Window
10,500–14,500 rpm
Theoretical Range
~258 km (160 mi)
Engine
Displacement599.0 ccm (36.55 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsTitanium valves
Power123.5 HP (90.1 kW)) @ 14500 RPM
Torque67.5 Nm (6.9 kgf-m or 49.8 ft.lbs) @ 10500 RPM
Compression13.1:1
Bore x Stroke67.0 x 42.5 mm (2.6 x 1.7 inches)
Valves/Cylinder4
Fuel SystemInjection. Fuel Injection with YCC-T and YCC-I
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCI: Transistor Controlled Ignition
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
DrivelineO-ring chain
Performance
Fuel Consumption6.60 litres/100 km (15.2 km/l or 35.64 mpg)
Greenhouse Gases153.1 CO2 g/km. (CO2 - Carbon dioxide emission)
Seat Height851 mm (33.5 inches) If adjustable, lowest setting.
Overall Height1095 mm (43.1 inches)
Overall Length2040 mm (80.3 inches)
Overall Width706 mm (27.8 inches)
Fuel Capacity17.03 litres (4.50 US gallons)
Oil Capacity2.60 litres (2.75 US quarts)
Other
StarterElectric
Color OptionsMatte Gray, Team Yamaha Blue, Intensity White/Matte Silver
InstrumentsMultifunction digital and analog instrumentation features: programmable shift light, digital speedometer, analog tachometer, dual tripmeters with miles-on-reserve function, odometer, water temp gauge and lights for neutral, high beam, low fuel and turn signals.
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.
