KTM 450 SX-F Fork Seals

The KTM 450 SX-F runs a 48 mm upside-down 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
  • Fork typeUpside-down
KitYearsSeal sizeReplaces OEM
55-131 2007–2016 48x58x9.5 Yamaha 1C3-23145-L0-00
55-132 2017–2022 48x58x8.5 Honda 51490-MEN-A31, Honda 51490-MEN-003, Kawasaki 92049-0074, Yamaha 1C3-23145-L0-00
57-105 2007–2022 n/a n/a
55-159 2023–2026 n/a n/a
56-192 2023–2026 n/a n/a
56-146 2007–2016 n/a n/a
56-147 2017–2022 n/a n/a
38-6054 (bushings) 2007 n/a n/a

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

Fork oil for your KTM 450 SX-F

A fork-oil change on the KTM 450 SX-F 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.

Fork protection for your KTM 450 SX-F