Yamaha MT-125 (2023+)
Fluid capacities, consumables, drivetrain, tire pressure & wear limits
The Yamaha MT-125 (2023+) takes 0.95 L of oil with a filter change (0.85 L without).
Fluid Capacities
Oil capacity (with filter)0.95 L
Oil capacity (without filter)0.85 L
Oil capacity (dry fill)1.05 L
Coolant (radiator)0.49 LPlus 0.15 L in the coolant reservoir (up to the maximum level mark)
Consumables
Engine oil gradeYAMALUBE SAE 10W-40, API service SG type or higher, JASO standard MA
Coolant typeYamaha genuine coolant or high-quality ethylene glycol antifreeze containing corrosion inhibitors for aluminum engines, premix 50/50
Oil filter (OEM)Not listed by part number in the extracted manual text
Air filter (OEM)Not listed by part number in the extracted manual text
Spark plug (OEM)NGK MR8E9
Front brake pads (OEM)Yamaha 5D7-F5805-00Web-confirmed for MT-125 2015-2021.
Rear brake pads (OEM)Yamaha B97-F5806-00Web-confirmed for MT-125.
Drive chainDID428VIX2, sealed type, 130 links
Clutch free play10–15 mm
Drivetrain
Chain size428
Chain links130
Chain slack30–40 mm
Chain 15-link limit191.5 mm
Front sprocket (OEM)14TDerived from the secondary reduction ratio 3.714 (52/14) — tooth counts aren't printed as a standalone spec
Rear sprocket (OEM)52TDerived from the secondary reduction ratio 3.714 (52/14) — tooth counts aren't printed as a standalone spec
Brakes & Tires
Front tire size100/80-17M/C 52SMichelin Pilot Street
Rear tire size140/70-17M/C 66SMichelin Pilot Street
Front tire pressure180 kPaSame pressure for 1 or 2 riders
Rear tire pressure200 kPa225 kPa with 2 riders
Brake fluid typeDOT 4
Wear Limits
Front brake disc (min)4 mm
Rear brake disc (min)4 mm
Brake pad — front (min)2 mm
Brake pad — rear (min)1.5 mm
Clutch friction plate (min)2.82 mmApplies to all 3 friction plates (1 pc each), standard thickness 2.92-3.08mm