The RCS (Ratio Click System) allows riders to adjust the lever ratio between two settings:
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18mm and 20mm (for brake master cylinders)
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16mm and 18mm (for clutch master cylinders)
This changes how the lever feels and how much pressure is applied with each pull.
š Why is that important?
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18mm = Softer, more progressive lever feel ā good for wet roads or smooth control.
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20mm = Firmer, more immediate response ā great for dry racing or aggressive riding.
So you can switch between comfort and performance with just a screwdriver ā no need to swap the whole part.
ā Key Benefits of Brembo RCS Master Cylinders:
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Adjustable ratio (as above).
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Radial mounting for direct hydraulic pressure (less flex, more precision).
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High-quality CNC-machined aluminum.
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Rebuildable and serviceable.
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Used in MotoGP, WSBK, and high-end street bikes.
š© Common Models
| Model Name | Function | Piston Size | Application |
|---|---|---|---|
| Brembo 19RCS | Brake master | 19mm | Superbikes, sportbikes (dual disc) |
| Brembo 17RCS | Brake master | 17mm | Smaller sportbikes, street bikes |
| Brembo 16RCS | Clutch master | 16mm | Clutch for sportbikes |
| Brembo 15RCS | Brake master | 15mm | Single-disc setups |
š„ What makes it special?
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It's like having two master cylinders in one ā switchable by the user.
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Track-proven tech adapted for the street.
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Modular and premium look ā anodized finish, replaceable levers, and more.
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