STM FYA-S210 street wet slipper clutch for Yamaha YZF-R9 2025-2026
02 · Data & docs

The facts.

Technical data
BrandSTM
Part NumberFYA-S210
TypeStreet Wet Slipper Clutch (anti-hopping)
FitmentYamaha YZF-R9 (2025–2026)
Engine CompatibilityCP3 inline-three
Intended UseRoad and track
OEM ReplacementYes — direct fit
DescriptionThe whole story▼

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
FitmentWhich bikes this fits▼
  • Yamaha YZF-R9 (2025–2026)
07 · Support

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08 · Paddock

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