The facts.
| Part Number | 25K-028B |
|---|---|
| Brand | K-Tech Suspension |
| Type | Fork travel indicator |
| Inner Diameter | 43 mm |
| Fitment | Yamaha YZF-R1 (2003–2026) |
| Mounting | Installs on fork in assembled state |
| Quantity | 1 |
DescriptionThe whole story▼
Knowing exactly how much fork travel your Yamaha YZF-R1 is using is the foundation of safe, informed suspension setup. The K-Tech Fork Travel Indicator 25K-028B fits directly onto the installed fork leg — no disassembly required — giving you an immediate, accurate reading of consumed travel so you can tune with confidence rather than guesswork.
Key Features
- Precision travel measurement: reads consumed fork stroke directly on the installed fork, letting you identify bottoming-out risk before it becomes a safety issue on road or track.
- Fits Yamaha YZF-R1 across an exceptionally wide model span — 2003 through 2026 — making it a long-term tool for any R1 owner or workshop.
- 43 mm inner diameter matched exactly to the YZF-R1 fork tube spec for a secure, rattle-free fit.
- Installs without removing the fork from the motorcycle, saving time during pre-session checks or tyre-warm-up laps.
- Manufactured by K-Tech Suspension — one of the most respected names in precision motorcycle suspension components — so build quality and dimensional accuracy are guaranteed.
Why a Fork Travel Indicator Matters
Suspension that bottoms out unexpectedly transfers a sudden, uncontrolled load spike through the chassis. On the road this translates to compromised braking stability; on track it can destabilise the bike mid-corner. A fork travel indicator gives you the data to set preload and damping correctly before an issue arises, not after. The K-Tech 25K-028B clips over the fork tube in seconds, slides freely under compression, and retains its position at maximum travel — read the mark, adjust accordingly.
Workshop and Track Use
Whether you are dialling in suspension for a circuit day, validating a spring-rate change, or simply running a pre-ride safety check, the 25K-028B makes the process repeatable and objective. Fit it, ride your usual route or pace lap, return to the pits and read the result. Combined with a proper sag measurement, it gives you the complete picture of how the R1's front end is working under your specific weight and riding style.
Fitment and Compatibility
Designed specifically for the Yamaha YZF-R1 with 43 mm fork tubes, covering all model years from 2003 to 2026. Confirm your fork outer tube diameter before ordering if your machine has been fitted with non-standard fork internals or a different-specification fork assembly.
Specifications
- Part number: 25K-028B
- Brand: K-Tech Suspension
- Inner diameter: 43 mm
- Fitment: Yamaha YZF-R1 (2003–2026)
- Mounting method: installs on fork in assembled state
- Quantity included: 1 fork travel indicator
What's includedEverything in the box▼
- 1x fork travel indicator
FitmentWhich bikes this fits▼
- Yamaha YZF-R1 (2003–2026)
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