The facts.
| Brand | STM |
|---|---|
| Part number | FSU-S110 |
| Type | Slipper clutch (anti-hopping clutch) |
| Fitment | Suzuki GSX-R 1000 (2009–2023) |
| Anti-hopping mechanism | Patented ball-ramp system |
| Spring type | Diaphragm spring |
| Weight saving vs. stock | Approx. 0.7–0.8 kg |
| Material | Billet aluminium |
DescriptionThe whole story▼
Engineered in Italy and carrying STM's decades-long motorsport heritage, the FSU-S110 slipper clutch for the Suzuki GSX-R 1000 (2009–2023) is a precision-machined replacement that transforms the way the bike behaves under hard braking and aggressive downshifts. Its patented ball-ramp mechanism and diaphragm spring design are the same technology trusted by World Superbike and track-day competitors the world over.
Key Features
- Patented ball-ramp anti-hopping system delivers measurable precision and stability at high engine speeds, eliminating the vagueness of the stock clutch under race conditions.
- Prevents engine over-rev on downshifts, keeping rear wheel behaviour composed and predictable entering corners.
- Minimises rear-wheel hop and significantly reduces the triggering impulse of a highside — a genuine safety gain at road and track speeds alike.
- Controlled rear-wheel slide characteristics allow confident, sport-oriented riding with improved feel throughout.
- Diaphragm spring design eliminates pressure-plate wobble, giving the rider a cleaner, more progressive lever release in every corner.
- Weight saving of approximately 0.7–0.8 kg over the stock unit by reducing rotating mass — a tangible improvement in throttle response and overall GSX-R 1000 performance.
- Better clutch engagement control mid-corner prevents the chassis from tucking, improving confidence in long, fast bends.
Design, Finish and Heritage
STM has been producing slipper clutches since the early days of the technology, and every detail of the FSU-S110 reflects that accumulated knowledge. The basket, hub and pressure plate are machined from high-grade aluminium billet, finished to the exacting standard you would expect from a company whose products appear at the front of European championship grids. The anodised surfaces resist heat discolouration and corrosion, so the clutch looks as purposeful after a season of track days as it does out of the box.
The ball-ramp geometry is not an approximation — it is a patented, precisely calibrated design that determines exactly how aggressively the clutch disengages on the overrun. This is the element that separates a true STM unit from cheaper copies: the ramp angle is engineered, not estimated.
Performance on Road and Track
For road riders who push hard through mountain passes, the FSU-S110 removes the anxiety of an unexpected rear-wheel skip mid-corner. For track riders, the reduction in rotating mass sharpens the GSX-R's response to throttle inputs and makes consistent lap times easier to achieve. The improved lever feel — a direct result of the diaphragm spring — reduces rider fatigue over a long session, allowing concentration to remain where it belongs: the braking markers and apex.
Fitment and Compatibility
The STM FSU-S110 is a direct-fit slipper clutch designed specifically for the following motorcycle:
- Suzuki GSX-R 1000 — model years 2009 through 2023
Always verify your specific model year before ordering. If you are unsure of compatibility, contact the Inter-Pace team before purchase.
Specifications
| Attribute | Detail |
|---|---|
| Brand | STM |
| Part number | FSU-S110 |
| Type | Slipper clutch (anti-hopping clutch) |
| Fitment | Suzuki GSX-R 1000 (2009–2023) |
| Anti-hopping mechanism | Patented ball-ramp system |
| Spring type | Diaphragm spring |
| Weight saving vs. stock | Approx. 0.7–0.8 kg |
| Material | Billet aluminium |
FitmentWhich bikes this fits▼
- Suzuki GSX-R 1000 (2009–2023)
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