K-Tech Fork Oil Seal & Dust Cap Kit – Yamaha YZF-R3 (2019–2026) 734.24.41
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When track sessions and hard road riding demand that your forks perform without compromise, the K-Tech Fork Oil Seal and Dust Cap Kit for the Yamaha YZF-R3 (2019–2026) delivers the precision fit and long-term reliability your suspension deserves. Manufactured by NOK — the global benchmark for suspension seals — every component in this kit is engineered to exact tolerances, keeping oil where it belongs and contaminants firmly out.
Key Features
- NOK-manufactured oil seals: the industry standard for OEM and performance suspension seals, trusted by race teams worldwide
- Exact fitment for Yamaha YZF-R3 model years 2019 to 2026 — no modification or shimming required
- Oil seals prevent fork fluid loss, preserving damping consistency lap after lap
- Dust caps shield the fork stanchions from grit, mud, and moisture ingress on track and road alike
- Precision-machined dimensions (37.00 mm inner diameter, 49.00 mm outer diameter) ensure a positive, leak-free seat in the fork leg
- Kit supplies both fork legs in a single purchase — two oil seals and two dust caps
Performance You Can Feel
A weeping fork seal is not merely a maintenance nuisance — on track it progressively corrupts damping characteristics, introduces unpredictable brake dive, and risks contaminating the front brake disc. The K-Tech 734.24.41 kit addresses this at source. NOK seals are specified by top suspension manufacturers precisely because their lip geometry and compound formulation maintain a consistent sealing surface across a wide temperature range, from cold morning warm-up laps to sustained back-to-back sessions in high ambient temperatures.
The matched dust caps complete the defence, forming a first barrier that prevents abrasive particles from ever reaching the seal lip. The result is a fork that stays in its set-up window longer, giving you the confidence to repeat corner-entry references consistently.
Build Quality & Materials
K-Tech sources seals exclusively from NOK, a manufacturer whose product line is found inside suspension units from the world's leading race and road brands. The dimensional specification — 37.00 mm inner diameter, 49.00 mm outer diameter, heights of 8.00 mm and 9.50 mm — is verified against the Yamaha YZF-R3 fork tube specification to ensure zero compromise on sealing pressure or installation clearance.
Installation Note
Installation requires specialist fork tools and suspension knowledge. K-Tech recommend that this kit is fitted exclusively by an authorised K-Tech Service Centre to guarantee correct assembly and to protect the integrity of the fork internals.
Fitment & Compatibility
This kit fits the following model:
- Yamaha YZF-R3 — model years 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Specifications
| Inner Diameter | 37.00 mm |
|---|---|
| Outer Diameter | 49.00 mm |
| Height (1) | 8.00 mm |
| Height (2) | 9.50 mm |
| Seal Manufacturer | NOK |
| Part Number | 734.24.41 |
| Fitment | Yamaha YZF-R3 (2019–2026) |
| Kit Contents | 2x oil seals, 2x dust caps |
| Brand | K-Tech |
|---|---|
| Part Number | 734.24.41 |
| Fitment | Yamaha YZF-R3 (2019–2026) |
| Seal Manufacturer | NOK |
| Inner Diameter | 37.00 mm |
| Outer Diameter | 49.00 mm |
| Height (1) | 8.00 mm |
| Height (2) | 9.50 mm |
| Kit Contents | 2x oil seals, 2x dust caps |
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2x oil seals (fork oil seals)
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2x dust caps
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// K-Tech
K-Tech Fork Oil Seal & Dust Cap Kit – Yamaha YZF-R3 (2019–2026) 734.24.41

Tech specs
- Brand
- K-Tech
- Part Number
- 734.24.41
- Fitment
- Yamaha YZF-R3 (2019–2026)
- Seal Manufacturer
- NOK
- Inner Diameter
- 37.00 mm
- Outer Diameter
- 49.00 mm
- Height (1)
- 8.00 mm
- Height (2)
- 9.50 mm
- Kit Contents
- 2x oil seals, 2x dust caps
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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