
The facts.
| Brand | K-Tech |
|---|---|
| Part number | FSS-026 |
| Seal manufacturer | NOK (in collaboration with Marzocchi) |
| Inner diameter | 45.00 mm |
| Outer diameter | 58.00 mm |
| Height | 11.00 mm |
| Quantity | 2x oil seals |
| Fitment | BMW S1000RR K67 (2019–2026) |
DescriptionThe whole story▼
Manufactured by NOK in collaboration with Marzocchi, the K-Tech FSS-026 fork oil seal kit delivers the exacting material quality and dimensional precision that the BMW S1000RR K67's suspension demands. Every seal in this kit is produced to the same specification chosen by leading Japanese suspension manufacturers, making it a genuine like-for-like replacement rather than a generic aftermarket approximation.
Key Features
- NOK-manufactured seals produced in collaboration with Marzocchi — the benchmark choice for premium suspension systems worldwide
- Direct OEM replacement designed specifically for the BMW S1000RR K67 (2019–2026), ensuring a perfect fit with no modification required
- Precise dimensions (45.00 mm inner diameter, 58.00 mm outer diameter, 11.00 mm height) eliminate the risk of improper sealing or premature wear
- Prevents fork oil loss and guards the fork internals against ingress of dirt and contamination
- Kit contains two seals — everything needed to service both fork legs in a single purchase
Build Quality and Materials
Where budget seal kits cut corners on compound quality and dimensional tolerance, the K-Tech FSS-026 is built around NOK's high-performance elastomer formulation. NOK supply seals to OEM suspension programmes across the industry precisely because their materials resist heat cycling, oil degradation and UV exposure far longer than generic alternatives. The co-development with Marzocchi means the seal geometry is optimised for the lip-contact pressure and surface finish of the S1000RR K67's fork tubes, maintaining an effective barrier throughout the service interval rather than just at installation.
Performance on Road and Track
A leaking or contaminated fork seal compromises damping consistency, taints brake components and, left unchecked, damages the fork tube surface itself. Fitting the FSS-026 kit restores the precise hydraulic environment the S1000RR K67's fork is calibrated for — whether that means confidence-inspiring feedback on fast B-roads or repeatable damping performance lap after lap on circuit. Keeping OEM-specification seals in place is one of the most cost-effective ways to protect a significant suspension investment.
Installation Note
This kit is engineered specifically for the BMW S1000RR K67 (2019–2026) and is not interchangeable with other model-year variants. Installation requires specialist tools and suspension knowledge; K-Tech recommend fitting by an authorised K-Tech Service Centre to ensure correct assembly and to maintain warranty coverage.
Fitment and Compatibility
- BMW S1000RR — model code K67, model years 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Specifications
| Attribute | Detail |
|---|---|
| Brand | K-Tech |
| Part number | FSS-026 |
| Seal manufacturer | NOK (in collaboration with Marzocchi) |
| Inner diameter | 45.00 mm |
| Outer diameter | 58.00 mm |
| Height | 11.00 mm |
| Quantity | 2x oil seals |
| Fitment | BMW S1000RR K67 (2019–2026) |
What's includedEverything in the box▼
- 2x fork oil seals
FitmentWhich bikes this fits▼
- BMW S1000RR K67 (2019–2026)
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