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K-Tech Fork Oil Seal & Dust Cover Kit – Aprilia RS 660 (2020–2026) FSK-005

€39,54

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  • 14-day returns — in stock ships within 24h
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We ship with DHL and FedEx — express on request. If an item is in stock, express delivery can often go out within 1 business day. Standard delivery takes about 2–5 business days domestically and usually around a week worldwide. Please check the available shipping options and delivery times in your cart, as we offer several carriers depending on the country.

Returns must be registered in advance by email and are possible in line with our cancellation policy (14-day return request + 14-day return window after approval). Please note: unregistered returns are not accepted. You'll find all details on conditions, exceptions and refunds in our cancellation policy.

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When lap times matter and fork performance cannot be compromised, the K-Tech FSK-005 fork oil seal and dust cover kit delivers the reliable, precision sealing your Aprilia RS 660 demands on both the track and the road. Manufactured by NOK — the world-leading OEM supplier of fork seals to the major Japanese motorcycle manufacturers — this kit brings factory-grade sealing technology directly to your suspension service.

Key Features

  • NOK-manufactured seals: the same supplier trusted by OEM fitment programmes worldwide, chosen for exceptional durability and dimensional accuracy.
  • Complete sealing solution: two oil seals prevent fork oil loss and maintain consistent damping performance, while two dust covers block dirt, grit and moisture from contaminating the stanchions.
  • Precision dimensions of 41.00 mm inner diameter and 53.00 mm outer diameter ensure a correct, leak-free fit in the RS 660 fork legs.
  • Protects and extends the working life of your fork internals — critical when chasing consistent lap times where damping integrity cannot vary.
  • Direct replacement for Aprilia RS 660 model years 2020 through 2026, covering the full current production run.

Performance & Build Quality

The difference between a fork that performs at its best and one that feels vague or leaks is almost always traced back to seal condition. NOK's production tolerances are among the tightest in the industry, which is precisely why they supply major motorcycle manufacturers as standard equipment. The oil seals in this kit maintain the hydraulic integrity of the fork, keeping damping curves consistent whether you are braking hard into a chicane or absorbing road imperfections on a canyon run. The dust covers act as the first line of defence, stripping contaminants from the stanchion surface before they can reach the oil seal lip and cause accelerated wear.

Installation Note

Fork seal replacement requires specialist tools and technical knowledge to ensure correct seating depth and assembly torque. K-Tech recommends having this kit installed at an authorised K-Tech Service Centre to guarantee optimum functionality and safety.

Fitment & Compatibility

This kit is designed specifically for the Aprilia RS 660, model years 2020 to 2026.

Specifications

  • Inner diameter: 41.00 mm
  • Outer diameter: 53.00 mm
  • Contents: 2x oil seals, 2x dust covers
  • Seal manufacturer: NOK
  • Part number: FSK-005
  • Fitment: Aprilia RS 660 (2020–2026)
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