Kawasaki Z900 (2025–2026)
Fluid capacities, consumables, drivetrain, tire pressure & wear limits
The Kawasaki Z900 (2025–2026) takes 3.6 L of oil with a filter change (3.2 L without).
Fluid Capacities
Oil capacity (with filter)3.6 L
Oil capacity (without filter)3.2 L
Oil capacity (dry fill)4 L
Coolant (radiator)2.4 LReserve tank full level, including radiator and engine
Consumables
Engine oil gradeAPI SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2, SAE 10W-40
Coolant typePermanent antifreeze (ethylene glycol, Green), 50/50 mixture with soft water
Oil filter (OEM)16097-0008From a Kawasaki oil filter fitment list — "Z900 ABS 2017-2026" and "Z900 SE 2022-2026" both cover this bike's full range.
Air filter (OEM)Viscous paper element — not listed by part number in the captured manual sections
Spark plug (OEM)NGK CR9EIA-9
Front brake pads (OEM)OEM — ZR902A/C/E: 4mm lining / ZR902B/D: 4.5mm lining. Brand not listed in captured pages.
Rear brake pads (OEM)OEM — 5mm lining. Brand not listed in captured pages.
Drive chainDAIDO DID525VZ2 (equipped models: DID525VZ2 BK) — 114 links. (ZR902B/E BR market: DAIDO DID525HV3 when shipping, ENUMA EK525RMX3/3D for replacement)
Clutch free play2–3 mm
Drivetrain
Chain size525
Chain links114
Chain slack30–40 mmPer the detailed Final Drive specifications chapter. The periodic-maintenance summary table in the same manual prints a narrower 25-35mm — flagged as an internal manual inconsistency, this generation's dedicated chapter table is used here.
Chain 20-link limit319 mmNew chain 20-link length standard: 317.5–318.2 mm
Front sprocket (OEM)15TDerived from this generation's own final drive reduction ratio 2.867 (43/15), confirmed from the general specifications page — tooth counts aren't printed as a standalone spec
Rear sprocket (OEM)43TDerived from this generation's own final drive reduction ratio 2.867 (43/15) — genuinely different from the 2020-2025 gen's 44T (2.933 ratio), confirmed from this generation's own general specifications page
Brakes & Tires
Front tire size120/70ZR17 M/C (58W)DUNLOP SPORTMAX Q5AF Z or GPR-300F J (both listed in captured pages)
Rear tire size180/55ZR17 M/C (73W)DUNLOP SPORTMAX Q5A Z or GPR-300J (both listed in captured pages)
Front tire pressure250 kPa
Rear tire pressure290 kPaUp to 180 kg load
Brake fluid typeDOT 4
Wear Limits
Front brake disc (min)4.5 mmDisc thickness standard is 4.8–5.2 mm — the manual publishes one figure that covers both front and rear rather than separate specs.
Rear brake disc (min)4.5 mmDisc thickness standard is 4.8–5.2 mm — the manual publishes one figure that covers both front and rear rather than separate specs.
Brake pad — front (min)1 mmStandard lining thickness is 4 mm on ZR902A/C/E, 4.5 mm on ZR902B/D.
Brake pad — rear (min)1 mmStandard lining thickness: 5 mm
Clutch friction plate (min)2.5 mmStandard thickness: 2.72–2.88 mm
Drive chain slack (limit)40 mmEquals the standard adjustment range maximum (30-40mm per the Final Drive chapter) — the manual does not define a separate over-limit threshold