K-Tech FSK-005 fork oil seal and dust cap kit for Yamaha YZF-R7 2021–2026
02 · Data & docs

The facts.

Technical data
Part NumberFSK-005
BrandK-Tech
Seal ManufacturerNOK
Inner Diameter41.00 mm
Outer Diameter53.00 mm
Kit Contents2x oil seals, 2x dust caps
FitmentYamaha YZF-R7 (2021–2026)
InstallationRecommended by authorised K-Tech Service Centre
DescriptionThe whole story

Worn fork seals are one of the most common causes of degraded handling and oil weeping on the Yamaha YZF-R7. This K-Tech fork oil seal and dust cap kit gives you a direct, cost-effective path back to factory-fresh fork performance, using OEM-grade NOK seals — the same manufacturer trusted by Japanese suspension OEMs as original equipment.

Key Features

  • Manufactured by NOK, a world-leading supplier of fork seals and the original-equipment choice for major Japanese suspension manufacturers.
  • Precise 41 mm inner diameter / 53 mm outer diameter geometry ensures a leak-free, perfectly seated fit in the YZF-R7 fork legs.
  • Two oil seals maintain consistent damping oil retention, preserving fork action and preventing the progressive handling degradation caused by leaking seals.
  • Two dust caps shield the fork stanchions from road grime, water ingress and debris, extending the service life of the new seals.
  • Direct OEM replacement — no modification required, and no compatibility guesswork for 2021–2026 YZF-R7 owners.
  • Competitively priced service kit that makes routine fork maintenance approachable without compromising on seal quality.

Everyday Usability and Value

For riders who use the YZF-R7 daily or for regular track days, keeping the forks in good health directly affects ride quality, tyre feel and braking confidence. Replacing seals at the first sign of oil film or stiff action costs far less than waiting until contaminated brake discs or damaged stanchions demand attention. The FSK-005 kit consolidates everything needed for a complete seal change into one affordable purchase, so the job gets done right rather than deferred.

Build Quality

NOK seals are specified by Yamaha, Honda, Kawasaki and Suzuki for factory-fit suspension because their dimensional accuracy and elastomer compound deliver consistent sealing pressure across the full range of fork travel and operating temperatures. K-Tech sources these seals directly and packages them as a matched kit, so you receive components that will perform identically to what left the Yamaha factory.

Installation Note

K-Tech recommends installation by an authorised K-Tech Service Centre. Proper fitting requires specialist tools and technical knowledge to ensure the seals seat correctly and the fork delivers its full performance and safety potential. Attempting installation without the correct seal driver and fork oil can result in seal damage or air entrapment.

Fitment & Compatibility

This kit is engineered specifically for the following model:

  • Yamaha YZF-R7 — model years 2021, 2022, 2023, 2024, 2025, 2026

Specifications

  • Part number: FSK-005
  • Inner diameter: 41.00 mm
  • Outer diameter: 53.00 mm
  • Seal manufacturer: NOK
  • Kit contents: 2x oil seals, 2x dust caps
  • Fitment: Yamaha YZF-R7 (2021–2026)
What's includedEverything in the box
  • 2x fork oil seals (NOK)
  • 2x dust caps
FitmentWhich bikes this fits
  • Yamaha YZF-R7 (2021–2026)
07 · Support

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08 · Paddock

Before you go.

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