Yamaha YZ450F (2023)
Fluid capacities, consumables, drivetrain, tire pressure & wear limits
The Yamaha YZ450F (2023) takes 0.96 L of oil with a filter change (0.94 L without).
Fluid Capacities
Oil capacity (with filter)0.96 LWith oil filter removal
Oil capacity (without filter)0.94 LOil change only
Oil capacity (dry fill)1.2 LFull disassembly refill
Coolant (radiator)1.03 LRadiator, including all routes
Consumables
Engine oil gradeYamalube 10W-40, 10W-50, 15W-40, 20W-40 or 20W-50, API SG or higher, JASO MA
Coolant typeHigh-quality ethylene glycol antifreeze containing anti-corrosion additives for aluminum engines, mixed 50/50 with soft waterWeb-confirmed against the YZ450F owner's service manual's own coolant wording.
Oil filter (OEM)5D3-13440-09Web-confirmed, covers YZ250F/450F/450FX 2003-2024.
Air filter (OEM)BHR-14451-00Web-confirmed for YZ450F 2023-2026 — a different part from the 2020-2022 generation (B2W-14451-01-00).
Spark plug (OEM)NGK LMAR8G
Drive chain520 non-sealed type, 114 links
Front brake pads (OEM)Yamaha B2W-25805-00From current Yamaha parts catalog (thinner confirmation than the rear pad). Wear indicator groove — lining thickness limit 1.0 mm.
Rear brake pads (OEM)Yamaha 1C3-W0046-50Web-confirmed for YZ125/250F/450F 2006-2023. Wear indicator groove — lining thickness limit 1.0 mm.
Clutch free play7–12 mmAt clutch lever end, cable-actuated
Drivetrain
Chain size520
Chain links114
Chain slack50–60 mmMeasured with the machine on a maintenance stand, chain unloaded
Chain 15-link limit242.9 mm
Front sprocket (OEM)13TDerived from secondary reduction ratio 3.769 (49/13)
Rear sprocket (OEM)49TDerived from secondary reduction ratio 3.769 (49/13)
Brakes & Tires
Front tire size80/100-21 51M, tube type (Dunlop MX33)
Rear tire size120/80-19 63M, tube type (Dunlop MX33)
Front tire pressure100 kPa
Rear tire pressure100 kPa
Brake fluid typeDOT 4
Wear Limits
Front brake disc (min)2.5 mm
Rear brake disc (min)3.5 mm
Brake pad — front (min)1 mm
Brake pad — rear (min)1 mm
Clutch friction plate (min)2.02 mmSame wear limit for both friction plate types
Drive chain slack (limit)60 mmUpper end of the maintenance-stand slack range — see also chain15LinkLimit for the wear-elongation measurement Yamaha actually specifies a hard limit for