Yamaha YZ450F (2020)
Fluid capacities, consumables, drivetrain, tire pressure & wear limits
The Yamaha YZ450F (2020) takes 0.65 L of oil with a filter change (0.63 L without).
Fluid Capacities
Oil capacity (with filter)0.65 LWith oil filter element removal/replacement
Oil capacity (without filter)0.63 LOil change only
Oil capacity (dry fill)0.9 LFull disassembly refill
Coolant (radiator)1.03 LRadiator, including all routes
Consumables
Engine oil gradeSAE 10W-40, 10W-50, 15W-40, 20W-40 or 20W-50, API service SG type or higher, JASO MAYAMALUBE recommended brand
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)B2W-14451-01-00Web-confirmed for YZ450F 2020-2022.
Spark plug (OEM)NGK LMAR8G
Drive chain520, non-sealed, 114 links
Front brake pads (OEM)Yamaha B2W-25805-00From current Yamaha parts catalog (thinner confirmation than the rear pad). Wear limit 1.0 mm lining thickness.
Rear brake pads (OEM)Yamaha 1C3-W0046-50Web-confirmed for YZ125/250F/450F 2006-2023. Wear limit 1.0 mm lining thickness.
Clutch free play7–12 mmAt clutch lever end, cable-actuated
Drivetrain
Chain size520
Chain links114
Chain slack50–60 mmMeasured on maintenance stand (rear wheel off ground)
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
Rear tire size110/90-19 62M (tube type)120/80-19 63M for AUS/CAN/NZL/ZAF market spec
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)2.82 mmBoth friction plate types (5 pcs and 3 pcs) share the same 2.82 mm wear limit
Drive chain slack (limit)60 mmUpper end of the adjustment range — beyond this, adjust or replace