Kawasaki Z125 (2017–2020)
Fluid capacities, consumables, drivetrain, tire pressure & wear limits
The Kawasaki Z125 (2017–2020) takes 0.93 L of oil with a filter change (0.85 L without).
Fluid Capacities
Oil capacity (with filter)0.93 LWhen filter is removed
Oil capacity (without filter)0.85 LWhen filter is not removed
Oil capacity (dry fill)1.2 L
Coolant (radiator)0.7 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)52010-1053Different filter design from the 16097-series used across most of the Kawasaki lineup — the Z125's small single-cylinder engine uses its own part family. Confirmed via Kawasaki's official parts diagrams (superseded from 52010-0552).
Air filter (OEM)11013-0756Web-confirmed for Z125 Pro 2017-2026.
Spark plug (OEM)NGK LMAR8G
Front brake pads (OEM)Not listed by part number in the manual (service part)
Rear brake pads (OEM)Not listed by part number in the manual (service part)
Drive chainLGB R428HNBS, 132 links
Clutch free play2–3 mm
Drivetrain
Chain size428
Chain links132
Chain slack25–35 mm
Chain 20-link limit259 mmNew chain 20-link length standard: 254.0–254.6 mm
Front sprocket (OEM)16TDerived from the final drive reduction ratio 3.500 (56/16) — tooth counts aren't printed as a standalone spec
Rear sprocket (OEM)56TDerived from the final drive reduction ratio 3.500 (56/16) — tooth counts aren't printed as a standalone spec
Brakes & Tires
Front tire size100/80-17M/C 52S
Rear tire size130/70-17M/C 62S
Front tire pressure200 kPa
Rear tire pressure225 kPa
Brake fluid typeDOT 4
Wear Limits
Front brake disc (min)4 mmStandard 4.3–4.7 mm
Rear brake disc (min)4.5 mmStandard 4.8–5.2 mm
Brake pad — front (min)1.5 mm
Brake pad — rear (min)1.5 mm
Clutch friction plate (min)2.6 mmStandard thickness: 2.92–3.08 mm
Drive chain slack (limit)35 mmEquals the standard adjustment range maximum — the manual does not define a separate over-limit threshold