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Motorcycle radial master cylinder EX9

référence: 23263

  • Fully machined aluminum
  • Left or Right
  • 15.87mm or 17.5mm
  • Black or Silver
Piston size







Improve braking and clutch feeling by placing on a motorcycle radial master cylinder.

The EX9 master cylinders are cut in the mass , in a block of aluminum.
They are not cast like most levers. This helps ensure durability and reliability.

The EX9 motorcycle radial master cylinder has a rocker lever to improve the feeling when pressing and to reduce the necessary action force.

In addition to improving braking, you will improve the look of the cockpit with a beautiful piece of aluminum.

The stroke of the lever is adjustable with the wheel.

The motorcycle radial master cylinder is available in 2 colors:

  • Black
  • Money

The motorcycle radial master cylinder is available for both sides:

  • Left: For a hydraulic clutch or a rear brake for an automatic motorcycle
  • Right: For the front brake

The motorcycle radial master cylinder is available in 2 piston sizes:

  • 15.87mm
  • 17.5mm

The size of the piston is to be chosen according to the number of calipers, the number of pistons of the caliper etc. More information about the piston size to choose on our blog.

Example of installing a motorcycle radial master cylinder

Here associated with BOX switches

Note: Available in 7-9 days.

To learn more about radial master cylinders:

Why choose a motorcycle radial master cylinder?

Motorcycle radial master cylinders are generally considered better than standard master cylinders because they provide a more precise and powerful braking system. Radial master cylinders have a larger piston size and longer stroke than standard master cylinders, allowing them to provide greater overall braking force. Additionally, the radial design allows for more even pressure distribution, which helps reduce the risk of uneven or inconsistent braking. Finally, radial master cylinders are usually made with high-performance materials designed to withstand the heat and vibration of a motorcycle, giving them increased longevity and reliability.

How to choose a Motorcycle radial master cylinder?

Piston diameter: Choose the piston diameter corresponding to your braking system

The diameter of the handlebar: Depending on the size of your handlebar (22 / 25 mm) choose the corresponding master cylinder.

The brand: It is important to choose a good quality master cylinder to ensure reliability and durability.

Manufacturing materials: A machined aluminum master cylinder is of better quality than a cast alloy product.


Bleeding the motorcycle radial master cylinder is a process of removing air from the brake system. This is necessary when air has entered the system, which may cause malfunction or reduced braking power.

Here are the general steps for bleeding a brake master cylinder:

  1. Prepare the necessary materials : You will need a brake bleeder kit, clean brake oil and a tool to loosen the brake fittings.
  2. Locate the brake master cylinder : The brake master cylinder is usually located on the handlebars of the motorcycle, it is often covered with a cover.
  3. Loosen the brake bleeders : Use the correct tool to loosen the brake bleeders located on the brake master cylinder and on the caliper. Be prepared to catch any oil that will leak out as you loosen the fittings.
  4. Purge the system : Use the brake bleeding kit to bleed the system. Depending on the kit, it may be necessary to squeeze a pump to suck in the air or squeeze the brake lever to push the air out.
  5. check oil level : When the air is released, fill the master cylinder with clean brake oil to the proper level. During the operation, make sure you always have liquid in your jar. The type of oil to use is usually listed on the brake reservoir cap.
  6. Reinstall the brake fittings : Tighten the brake fittings again and check that there is no oil leakage.
  7. Test the brake : Test the brake to make sure it works properly. It is important to do this on safe ground and with moderate speed. You can also wait several hours to check if air bubbles are still present in the circuit. These will go up and your lever will be "pout", you will then have to start again