K-Tech Fork Oil Seal & Dust Cap Kit BMW M1000RR K66 (2021–2026) FSK-026
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Engineered to OEM-exceeding standards, the K-Tech fork oil seal and dust cap kit for the BMW M1000RR K66 brings together NOK-manufactured seals — the global benchmark in suspension sealing technology — with precision-matched dust caps to deliver a complete, confidence-inspiring rebuild in a single kit. When the front end of a 210-horsepower superbike demands absolute reliability, the quality of the seal matters as much as the spring rate.
Key Features
- NOK-produced oil seals: NOK is the world-leading manufacturer of suspension seals, trusted by OEM and aftermarket performance teams alike for consistent quality and longevity.
- Complete two-piece sealing system: two oil seals and two dust caps address both oil retention and contamination ingress in a single purchase.
- Precise dimensional fit: 45.00 mm inner diameter and 58.00 mm outer diameter matched exactly to the M1000RR K66 fork specification.
- Protection against oil loss: high-integrity lip design prevents fork oil seepage that degrades damping feel and contaminates brake components.
- Contamination defence: dust caps form a robust barrier against road grit, water and fine debris that accelerates fork stanchion wear.
- Suspension performance preservation: replacing worn seals restores the fork's intended damping response and extends overall fork service life.
Build Quality & Materials
K-Tech specifies NOK seals throughout its suspension rebuild kits for good reason. NOK holds the largest global market share in precision sealing components and supplies suspension manufacturers across MotoGP, World Superbike and series production. The rubber compound resists degradation from fork oil chemistry across a wide operating temperature range, while the seal lip geometry is optimised for the surface finish tolerances of the M1000RR K66 stanchions. The dust caps complement the oil seals with an equally robust construction, locking out the particulate contamination that is the primary cause of premature oil seal failure on road and track use alike.
Road & Track Application
Whether the M1000RR is used as a high-mileage road machine or a dedicated circuit tool, fork seals are a service item that rewards proactive replacement. Degraded seals allow fork oil to film the stanchion, reducing effective damping and — critically — risking front brake contamination. The FSK-026 kit makes a like-for-like, factory-specification service straightforward, returning the front suspension to the precise character BMW and K-Tech intend.
Installation Note
Correct installation requires specialist tooling and suspension knowledge. K-Tech recommends fitting this kit at an authorised K-Tech Service Centre to ensure optimum performance and safety. Incorrect fitting can compromise fork function and rider safety.
Fitment & Compatibility
This kit is designed and dimensioned specifically for the following model:
- BMW M1000RR K66 (2021, 2022, 2023, 2024, 2025, 2026)
Specifications
| Specification | Detail |
|---|---|
| Part Number | FSK-026 |
| Inner Diameter | 45.00 mm |
| Outer Diameter | 58.00 mm |
| Seal Manufacturer | NOK |
| Contents | 2x oil seals, 2x dust caps |
| Fitment | BMW M1000RR K66 (2021–2026) |
| Brand | K-Tech |
| Part Number | FSK-026 |
|---|---|
| Inner Diameter | 45.00 mm |
| Outer Diameter | 58.00 mm |
| Seal Manufacturer | NOK |
| Contents | 2x oil seals, 2x dust caps |
| Fitment | BMW M1000RR K66 (2021–2026) |
| Brand | K-Tech |
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2x fork oil seals
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2x dust caps
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// K-Tech
K-Tech Fork Oil Seal & Dust Cap Kit BMW M1000RR K66 (2021–2026) FSK-026

Tech specs
- Part Number
- FSK-026
- Inner Diameter
- 45.00 mm
- Outer Diameter
- 58.00 mm
- Seal Manufacturer
- NOK
- Contents
- 2x oil seals, 2x dust caps
- Fitment
- BMW M1000RR K66 (2021–2026)
- Brand
- K-Tech
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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