What fork seal fits a KTM 300 SX?

The KTM 300 SX uses a 48 mm fork. 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 300 SX fork?

The KTM 300 SX has a 48 mm fork.

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 300 SX.

KTM 300 SX Fork Seals

Q: What fork oil does the KTM 300 SX use?

The KTM 300 SX uses 4wt fork oil, about 380 ml per leg.

The KTM 300 SX runs a 48 mm front fork.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

Kit	Years	Seal size	Replaces OEM
55-159	2023–2026	n/a	n/a
56-192	2023–2026	n/a	n/a
38-6157 (bushings)	2023–2026	n/a	n/a

Verified fork kits we stock for your KTM 300 SX

We're restocking fork kits for the KTM 300 SX. Browse all suspension.

Fork oil for your KTM 300 SX

A fork-oil change on the KTM 300 SX uses 4wt fork oil, about 380 ml per leg. We don't stock 4wt yet, so the closest weight we carry (5wt) is shown below.