What fork seal fits a Honda CRF450RX?

The Honda CRF450RX uses a 49 mm conventional fork with 49x60x11 oil seals. We stock the manufacturer-verified seal and bushing kits for it; matching is done off the verified application list, not just the seal size.

What size is the Honda CRF450RX fork?

The Honda CRF450RX has a 49 mm conventional fork with 49x60x11 oil seals.

Can I use any seal with the same dimensions?

No. Fork seals can share a size and still not seat correctly in a different fork design, so use the seal verified for your bike. The kits listed here are confirmed by the manufacturer to fit the Honda CRF450RX.

Honda CRF450RX Fork Seals

Q: What fork oil does the Honda CRF450RX use?

The Honda CRF450RX uses 5wt fork oil (factory fill KYB 01M / Showa SS-05 (~5wt)).

The Honda CRF450RX runs a 49 mm conventional front fork, oil seal 49x60x11 (Showa 49mm conventional (BMW R18 2021-2025)).Every kit here is verified by the manufacturer to fit this exact bike. Fork seals can share a size and still not seat in a different fork, so we only list what is confirmed for your bike.

Kit	Years	Seal size	Replaces OEM
55-129	2017–2025	49x60x11	Harley-Davidson 91700025A, Honda 51490-KRN-A91
57-104	2017–2025	n/a	n/a
56-144	2017–2025	n/a	n/a
38-6131 (bushings)	2017–2025	n/a	n/a

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Honda CRF450RX Fork Seals

Verified fork kits we stock for your Honda CRF450RX

Fork oil for your Honda CRF450RX

Fork protection for your Honda CRF450RX