K-Tech FSS-021 fork oil seal kit for Ducati Panigale V4 S
02 · Data & docs

The facts.

Technical data
BrandK-Tech
Part NumberFSS-021
Seal ManufacturerNOK
Inner Diameter43.00 mm
Outer Diameter55.10 mm
Height (1)11.00 mm
Height (2)14.00 mm
Quantity2 oil seals (pair)
FitmentDucati Panigale V4 S (2018–2024)
DescriptionThe whole story

Reliable fork sealing is a matter of safety as much as performance. The K-Tech Fork Oil Seal Kit FSS-021 is engineered specifically for the Ducati Panigale V4 S (2018–2024), supplying a pair of precision-manufactured NOK oil seals in the exact dimensions the S-model's forks demand — so every service restores the suspension to its original, leak-free standard.

Key Features

  • Manufactured by NOK, the global benchmark in fork oil seals and the preferred supplier of Japan's leading suspension manufacturers — chosen for exceptional dimensional accuracy and long service life.
  • Exact-fit dimensions (43.00 x 55.10 x 11.00/14.00 mm) matched to the Ducati Panigale V4 S fork specification, eliminating the risk of incorrect seating or premature failure.
  • Dual-height profile (11.00 mm and 14.00 mm) provides positive oil retention and effective dust exclusion, keeping the fork legs clean and the damping consistent.
  • Supplied as a complete pair — both legs serviced in a single purchase, ensuring balanced fork performance and simplifying workshop planning.
  • Part number FSS-021 is unique to the S-model fitment; never risk fitting a seal dimensioned for a different variant.

Performance & Build Quality

NOK seals are produced to tolerances that match OEM standards, using elastomer compounds formulated to resist the heat cycling, fork oil chemistry, and high-load deflections typical of a high-performance superbike like the Panigale V4 S. The result is a seal that maintains its lip geometry over an extended service interval, preventing the oil weeping that leads to contaminated brake discs, degraded damping and accelerated fork bush wear. K-Tech has specified this seal kit as part of its professional suspension service range — the same components used by authorised K-Tech service centres worldwide.

Installation Note

These seals require specialist fork-seal installation tools and technical knowledge of inverted fork assembly. Fitting should be carried out by an authorised K-Tech Service Centre or a qualified suspension technician. Correct installation is essential to ensure full sealing performance and rider safety.

Fitment & Compatibility

This kit is exclusively designed for the S models of the Ducati Panigale V4 range. It is not suitable for the standard Panigale V4 or other variants. Always verify your model designation before ordering.

  • Ducati Panigale V4 S — 2018, 2019, 2020, 2021, 2022, 2023, 2024

Specifications

Part Number FSS-021
Inner Diameter 43.00 mm
Outer Diameter 55.10 mm
Height (1) 11.00 mm
Height (2) 14.00 mm
Quantity 2 oil seals (pair)
Seal Manufacturer NOK
Fitment Ducati Panigale V4 S (2018–2024)
What's includedEverything in the box
  • 2x K-Tech Fork Oil Seals (FSS-021) for Ducati Panigale V4 S (2018–2024)
FitmentWhich bikes this fits
  • Ducati Panigale V4 S (2018–2024)
07 · Support

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08 · Paddock

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