Built around Kawasaki's sport motorcycle platform, the 2015 Kawasaki Ninja ZX-6R 636 utilizes a 636 cc (38.8 cu in) liquid-cooled in-line four, four-stroke layout. In factory specification, peak output is rated at 131 HP (95.6 kW) at 13,500 rpm while maximum torque reaches 71 Nm (52.4 lb-ft) at 11,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 206 HP per liter and a 2,000 rpm working window between peak torque (11,500 rpm) and peak power (13,500 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the Ninja ZX-6R 636 measures 192 kg (423 lbs) wet (curb), translating to a power-to-weight ratio of 0.68 HP/kg (1.47 kg per horsepower). Rider ergonomics and chassis geometry center around a 830 mm (32.7 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,395 mm (54.9 in) wheelbase engineered for quick, flickable steering geometry. The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 4 indexed model years from 2013 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
206 HP/L
Power-to-Weight
0.68 HP/kg (1.47 kg/HP)
Power Band Window
11,500–13,500 rpm
Standover Height
830 mm (32.7 in)
Engine
Displacement636.0 ccm (38.81 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsIn-line four, four-stroke
Power131.0 HP (95.6 kW)) @ 13500 RPM
Torque71.0 Nm (7.2 kgf-m or 52.4 ft.lbs) @ 11500 RPM
Compression12.9:1
Bore x Stroke67.0 x 41.5 mm (2.6 x 1.6 inches)
Valves/Cylinder4
Fuel SystemInjection. 38 mm x 4 (Keihin) with oval sub-throttles
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital
LubricationForced lubrication, wet sump with oil cooler
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet multi-disc, manual
DrivelineSealed chain
Chassis
Frame TypeTwin spar, pressed-aluminium
Rake23.5°
Trail101 mm (4.0 inches)
Front Suspension41 mm inverted fork with top-out springs
Front Travel120 mm (4.7 inches)
Rear SuspensionBottom-Link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount
Rear Travel134 mm (5.3 inches)
Wheelbase1395 mm (54.9 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre180/55-ZR17
Front BrakesDouble disc. Floating discs. Optional ABS.
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc. Optional ABS.
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Weight incl.192.0 kg (423.3 pounds)
Seat Height830 mm (32.7 inches) If adjustable, lowest setting.
Overall Height1115 mm (43.9 inches)
Overall Length2085 mm (82.1 inches)
Overall Width705 mm (27.8 inches)
Fuel Capacity17.00 litres (4.49 US gallons)
Other
StarterElectric
Color OptionsPearl Crystal White/Flat Ebony, Lime Green/Flat Ebony
Notes
Maximum power with RAM Air 101 kW /137 PSHP at 13,500 rpm. ABS adds two kg.
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.
