STM Slipper Clutch Yamaha YZF-R9 (2025-2026) FYA-S210 Street Wet Anti-Hopping
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Precision-engineered from the ground up to match the character of Yamaha's CP3-powered R9, the STM Street Wet Slipper Clutch FYA-S210 is built to the same exacting standards you would expect from a marque that supplies top-tier race teams. Every component reflects STM's commitment to materials quality and long-term durability, giving the YZF-R9 a clutch that is as refined in daily riding as it is decisive on a trackday.
Key Features
- Engineered specifically for the Yamaha YZF-R9 CP3 engine — optimised engagement characteristics matched to the motor's power delivery
- STM's proven anti-hopping mechanism substantially reduces rear-wheel hop under hard, late braking and aggressive downshifts
- Smooth, controlled gear changes at high revs — reduced engine braking response for a more composed rear end mid-corner
- Premium STM construction throughout: high-grade materials selected for consistent performance and exceptional service life
- Equally at home on road and circuit — street-wet specification means reliable feel and modulation in all conditions
- Direct OEM replacement fitment — no custom fabrication required
Built to Last, Built to Perform
STM's reputation rests on the quality of the parts it puts into production, not merely the concept. The FYA-S210 is machined and assembled to tight tolerances, ensuring the slipper mechanism operates predictably lap after lap and season after season. The use of performance-grade materials throughout — rather than cost-optimised alternatives — means wear characteristics remain consistent long after budget alternatives begin to fade. This is a clutch you buy once.
On the Road and on Track
Aggressive throttle-off braking into a tight corner is where lesser clutches betray their limits. The STM slipper mechanism intervenes progressively, decoupling enough drivetrain load to stabilise the chassis without sacrificing the connected feel that experienced riders depend on. The result is noticeably tidier corner entries, more confidence under trail braking, and a rear end that stays planted through lean angle changes. Whether you are threading through traffic or chasing lap times, the improvement in composure is immediate.
Fitment & Compatibility
- Yamaha YZF-R9 — model years 2025 and 2026
Specifications
| Attribute | Detail |
|---|---|
| Brand | STM |
| Part Number | FYA-S210 |
| Type | Street Wet Slipper Clutch (anti-hopping) |
| Fitment | Yamaha YZF-R9 (2025–2026) |
| Engine Compatibility | CP3 inline-three |
| Intended Use | Road and track |
| OEM Replacement | Yes — direct fit |
| Brand | STM |
|---|---|
| Part Number | FYA-S210 |
| Type | Street Wet Slipper Clutch (anti-hopping) |
| Fitment | Yamaha YZF-R9 (2025–2026) |
| Engine Compatibility | CP3 inline-three |
| Intended Use | Road and track |
| OEM Replacement | Yes — direct fit |
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