At the heart of the 2013 Kawasaki Ninja ZX-6R 636 sport motorcycle, Kawasaki utilizes a 636 cc (38.8 cu in) liquid-cooled in-line four, four-stroke layout. In factory specification, peak output is rated at 129.3 HP (94.4 kW) while maximum torque reaches 71 Nm (52.4 lb-ft), transferring power to the rear wheel through chain final drive. With a specific output of 203.3 HP per liter, 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 0.67 HP/kg (1.48 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
203.3 HP/L
Power-to-Weight
0.67 HP/kg (1.48 kg/HP)
Standover Height
830 mm (32.7 in)
Engine
Displacement636.0 ccm (38.81 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsV2, four-stroke
Power129.3 HP (94.4 kW))
Torque71.0 Nm (7.2 kgf-m or 52.4 ft.lbs)
Compression12.9:1
Bore x Stroke67.0 x 45.1 mm (2.6 x 1.8 inches)
Valves/Cylinder4
Fuel SystemInjection
IgnitionDigital
LubricationForced lubrication, wet sump
CoolingLiquid
Transmission
Final DriveChain (final drive)
ClutchWet multi-disc, manual
DrivelineSealed chain
Chassis
Frame TypePerimeter, pressed-aluminium
Front Suspension41 mm inverted fork with top-out springs Compression damping: Stepless. Rebound damping: Stepless. Spring preload: Fully adjustable (0-15 mm)
Rear SuspensionBottom-Link Uni-Trak with gas-charged shock and top-out spring Compression damping: Stepless Rebound damping: 25-way Spring preload: Fully adjustable (5.5-15.5 mm)
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.
