Kawasaki Ninja ZX-4R

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Into a category filled with 400cc sport models, Kawasaki introduces a revolutionary supersport model. The Ninja ZX-4R mounts a 399 cc In-Line Four engine with class-leading performance in a compact chassis with proportions similar to smaller-displacement models. On the track or on the street, experiencing the exhilaration of the Ninja ZX-4R’s unprecedented power, intoxicating high-rpm wail, and its sharp, nimble handling will surely awaken the dormant supersport within you.

Key Features

  • HIGH-REVVING 399
  • WORLDSBK-INSPIRED CHASSIS DESIGN
  • HIGH-PERFORMANCE SUSPENSION AND BRAKE COMPONENTS
  • HIGH-GRADE ELECTRONICS AND FEATURES
  • FIERCE NINJA ZX STYLING
  • Centre Ram Air
  • ø37 mm SFF-BP front suspension
  • Horizontal Back-link rear suspension
Maximum Power55.0 kW {75 PS} / 14,500 rpm
Maximum Power with Ram Air56.7 kW {77 PS} / 14,500 rpm
Maximum Torque37.6 Nm {3.8 kgfm} / 12,500 rpm
Engine4-stroke In-Line Four
Displacement399 cc
Bore x Stroke57.0 x 39.1 mm
Compression Ratio12.3:1
Valve SystemDOHC, 16 valves
Fuel SystemFuel injection: ø34 mm x 4
IgnitionDigital
StartingElectric
CoolingLiquid-cooled
LubricationForced lubrication, wet sump
Transmission6-speed, return
Primary Reduction Ratio2.029 (69/34)
Gear Ratio: 1st2.929 (41/14)
Gear Ratio: 2nd2.056 (37/18)
Gear Ratio: 3rd1.619 (34/21)
Gear Ratio: 4th1.333 (32/24)
Gear Ratio: 5th1.154 (30/26)
Gear Ratio: 6th1.037 (28/27)
Final Reduction Ratio3.429 (48/14)
ClutchWet multi-disc, manual
Final DriveChain
FrameTrellis, high-tensile steel
Front Suspensionø37 mm inverted fork (SFF-BP) with top-out springs
Rear SuspensionHorizontal Back-link, gas-charged shock with spring preload adjustability
Front Wheel Travel120 mm
Rear Wheel Travel112 mm
Rake23.5°
Trail97 mm
Steering Angle (L/R)35° / 35°
Front Tyre120/70ZR17M/C (58W)
Rear Tyre160/60ZR17M/C (69W)
Front Brake/sDual semi-floating ø290 mm discs
Front Caliper/sDual radial-mount, monobloc, opposed 4-piston
Rear Brakeø220 mm disc
Rear CaliperSingle-piston
Dimensions (LxWxH)1,990 x 765 x 1,110 mm
Wheelbase1,380 mm
Road Clearance135 mm
Seat Height800 mm
Curb Weight*188 kg
Estimated Dry Weight**174 kg
Fuel Capacity15 litres
Model CodeZX400PTFNN