Sprockets for the 2025 Yamaha YZ450FX. 10 sprockets on this page name the 2025 model year outright, by fitment rule or on the listing; the rest fit the YZ450FX across its years. The YZ125 through YZ450F and the WRs all run a 520 chain, so a 520 rear listed for the YZ hub fits across the range for its years. The YZ85 runs a 428 and the YZ65 a 420.
Set your bike at the top of the store, with the year, and every list in it narrows to parts with confirmed fitment. Members pay the member price on every product in the store and get free standard shipping on orders over $10. Membership is $5 for the first month.
Found it cheaper somewhere else online? We’ll beat it for members. Send us the link.
The sprockets listed first here name the 2025 YZ450FX by year. The YZ125 through YZ450F and the WRs all run a 520 chain, so a 520 rear listed for the YZ hub fits across the range for its years. The YZ85 runs a 428 and the YZ65 a 420. If a listing names a year range that stops short of 2025, check with us before you order; we answer the same day.
Often, but not always: a new generation changes the part. The YZ125 through YZ450F and the WRs all run a 520 chain, so a 520 rear listed for the YZ hub fits across the range for its years. The YZ85 runs a 428 and the YZ65 a 420. Every listing on MWMX names the years it covers, and the 2025 is in the year range of everything at the top of this page.
Yes. Members pay the member price on every product in the store and get free standard shipping on orders over $10. Membership is $5 for the first month. Orders placed before the afternoon cut off ship the same day from our Australian warehouse.
Not sure what fits? Set your bike and year at the top of the store and every list narrows to parts with confirmed fitment, or message us with your model and year.
