KAWASAKI · Lightweight Sport
Ninja ZX-4RR Spec Sheet
399cc screamer revving to 15,000 rpm. Pocket rocket reborn.
2026 · 399cc inline-4 · 6-Speed (KQS)
Power
77hp
Torque
27lb-ft
Curb weight
417lb
0–60 mph
5.0s
Seat height
31.5in
MSRP
$9,999
ClassLightweight Sport
Model year2026
Stock colorLime Green
Road legalYes
Parts in MotoModder52
FuelPremium (91+ octane)
Oil changeevery 4,000 mi
Valve checkevery 16,000 mi
Rear tire160/60-ZR17
Chain520
Performance & engine
Claimed figures for the US model, plus magazine-tested acceleration.
Engine399cc inline-4
LayoutInline-4
Displacement399 cc
Horsepower77 hp (claimed, US)
Torque27 lb-ft
Gearbox6-Speed (KQS)
Clutchless shiftingQuickshifter, up & down
0–60 mph5.0 s
0–100 mph13.0 s
¼ mile13.6 s
Power-to-weight5.42 lb per hp
Curb weight417 lb
FuelPremium (91+ octane)
MSRP$9,999
Garage reference card
The numbers you look up mid-wrench. 15 of 15 published values are filled in; torque specs, plug gap, coolant and idle come from your owner's manual. Tap any value to edit it; your changes save on this device.
Tires & Chain
Fluids & Capacities
Engine & Electrical
mm
rpm
Chassis
Your edits save automatically. Reset restores the published values.
Service schedule
The intervals MotoMaintain uses for the Ninja ZX-4RR, whichever comes first. Track them in MotoMaintain →
Engine Oil & FilterFresh oil and a new filter. The single most important service for engine life.
Every 4,000 mi or 12 mo Chain Clean & LubeClean and re-lube the chain. Do it more often in wet or dusty riding.
Every 500 mi Chain Tension & InspectionCheck chain slack, adjust if needed, inspect sprockets for wear.
Every 4,000 mi Air FilterInspect and replace the air filter. More often if you run a high-flow filter.
Every 12,000 mi Spark PlugsReplace spark plugs. Iridium plugs typically last the full interval.
Every 16,000 mi Brake FluidFlush and replace brake fluid. It absorbs moisture over time regardless of miles.
Every 24 mo CoolantDrain and replace engine coolant.
Every 24,000 mi or 36 mo Valve Clearance CheckMeasure valve clearances and shim as needed. A big, interval-based service — intervals vary a lot by engine.
Every 16,000 mi Brake PadsInspect pad thickness. Replacement is wear-based — track and aggressive riding wears them faster.
Check every 4,000 mi TiresInspect tread depth, pressure, and condition. Replacement is wear-based.
Check every 3,000 mi Full Service / InspectionComprehensive dealer-style inspection: fasteners, bearings, suspension, electrical, fluids.
Every 8,000 mi or 12 mo