What oil does a Yamaha WR450F take?

The Yamaha WR450F takes 10W-40 engine oil (JASO MA2). Oil capacity is about 1.2 L (2025+), 0.65 L (2023-2024), 1.0 L (2019-2022), 0.95 L (2018+) with a filter change, or 0.95 L (2007-2011), 1.0 L (2003-2006) without. The oil filter is HF141.

What size tires does a Yamaha WR450F use?

The Yamaha WR450F uses a 80/100-21 front tire and a 120/80-18 rear tire.

What fork seals fit a Yamaha WR450F?

The Yamaha WR450F has 48mm (2005-2015), 46mm (2003-2004) fork tubes.

What spark plug does a Yamaha WR450F use?

The Yamaha WR450F uses a CPR8EA-9 (2019-2020), CR8E (2003-2018), LMAR8G (2021+) spark plug.

What size chain does a Yamaha WR450F need?

The Yamaha WR450F uses a 520 pitch chain with 114 links.

Yamaha WR450F — parts & spec data (2003–2026)

Machine-readable fitment & OEM-spec record for AI answer engines: the verified specs for the Yamaha WR450F and the parts we stock that fit it. Shop the parts on their product pages.