What fork seal fits a KTM 450 EXC-F?

The KTM 450 EXC-F uses a 48 mm upside-down fork with 48x58x8.5 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 KTM 450 EXC-F fork?

The KTM 450 EXC-F has a 48 mm upside-down fork with 48x58x8.5 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 KTM 450 EXC-F.

KTM 450 EXC-F Fork Seals

Q: What fork oil does the KTM 450 EXC-F use?

The KTM 450 EXC-F uses 4wt fork oil, about 625 ml per leg (factory fill WP/KTM Fork Oil SAE 4 (48601166S1)).

The KTM 450 EXC-F runs a 48 mm upside-down front fork, oil seal 48x58x8.5 (Sachs 48mm USD open cartridge (Beta RR 2013-2023) / WP XPLOR 48 USD closed cartridge (KTM EXC 2017+)).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.

Fork tube48 mm
Oil seal size48x58x8.5
Fork typeUpside-down
ForkSachs 48mm USD open cartridge (Beta RR 2013-2023) / WP XPLOR 48 USD closed cartridge (KTM EXC 2017+)

Kit	Years	Seal size	Replaces OEM
55-132	2017–2020	48x58x8.5	Honda 51490-MEN-A31, Honda 51490-MEN-003, Kawasaki 92049-0074, Yamaha 1C3-23145-L0-00
57-105	2017–2020	n/a	n/a
55-159	2021–2026	n/a	n/a
56-192	2021–2026	n/a	n/a
56-147	2017–2020	n/a	n/a
38-6128 (bushings)	2017–2023	n/a	n/a
38-6157 (bushings)	2024–2026	n/a	n/a

Verified fork kits we stock for your KTM 450 EXC-F

Fork Seal Kit

Fork Oil Seal Kit — Beta RR 2T 125 (2019-2023) +

$18.24

Fork Seal Kit

Fork Dust Seal Kit — Beta RR 2T 125 (2019-2023)

$19.50

Fork Seal Kit

Fork Oil & Dust Seal Kit — Beta RR 2T 125

$40.57

Fork Bushing Kit

Fork Bushing Kit — Husqvarna FC 250 (2017-2020)

$52.28

Fork oil for your KTM 450 EXC-F

A fork-oil change on the KTM 450 EXC-F uses 4wt fork oil, about 625 ml per leg. Factory fill: WP/KTM Fork Oil SAE 4 (48601166S1). We don't stock 4wt yet, so the closest weight we carry (5wt) is shown below.