K-Tech Fork Oil Seal Kit Honda CBR 600 RR (2005-2025) NOK Seals FSS-007

Engineered to the exacting standards that K-Tech's suspension programme demands, this fork oil seal kit pairs precision-manufactured NOK seals with a direct OEM-replacement fit for the Honda CBR 600 RR across every model year from 2005 to 2025. The result is a component that restores factory fork performance and resists oil weeping far longer than budget alternatives, whether the bike sees weekend track days or daily road use.

Key Features

• Premium NOK-manufactured oil seals, sourced from one of the world's most respected sealing specialists, delivering proven longevity and consistent performance under repeated fork cycling.
• Precise dimensional match — 41.00 mm inner diameter, 54.00 mm outer diameter, 11.00 mm height — guarantees a leak-free interference fit in the fork legs without modification.
• Direct replacement for OEM seals on the Honda CBR 600 RR (2005–2025), eliminating the guesswork of cross-referencing aftermarket alternatives.
• Supplied as a matched pair so both fork legs are serviced simultaneously, maintaining balanced damping characteristics across the front axle.
• Specifically validated for Honda CBR 600 RR forks fitted with Ohlins/SOQI internals, ensuring compatibility where standard seals may not seat correctly.

Build Quality and Materials

The seals in this kit are produced by NOK, a global leader in precision sealing technology whose components are found in original equipment suspension assemblies worldwide. The compound used balances flexibility with resistance to fork oil degradation, UV exposure and the thermal cycling inherent in high-performance motorcycle use. Every seal in the FSS-007 kit is manufactured to tight dimensional tolerances, which is why K-Tech specifies NOK as its preferred supplier for their service kits rather than relying on generic catalogue parts.

The 41 mm bore matches the inner diameter of the fork stanchion precisely, preventing micro-movement that can accelerate seal lip wear. The 54 mm outer diameter locks securely into the fork leg housing, and the 11 mm height profile replicates the OEM stack height so dust wiper positioning remains unaffected after installation.

Performance and Longevity on Road and Track

A weeping fork seal is more than a cosmetic issue — contaminated brake discs, degraded damping oil and premature bushing wear are the downstream consequences. Replacing both seals with matched NOK units from this kit addresses the root cause cleanly and restores the precise oil film that allows the fork internals to cycle smoothly under braking and over surface changes. Riders who service their suspension at recommended intervals and use quality seals like these consistently report a more planted front-end feel and greater confidence under trail-braking.

Fitment and Compatibility

This kit is designed exclusively for the following application:

• Honda CBR 600 RR — all variants, model years 2005 to 2025
• Specifically suited to CBR 600 RR models equipped with Ohlins/SOQI fork assemblies

Installation must be carried out by an authorised K-Tech Service Centre. Specialist tooling and technical knowledge are required to ensure the seals are seated correctly and that the full performance and safety potential of the kit is realised.

Specifications