Front brake master cylinders

Accossato Front Brake Master Cylinders for Motorcycles

Discover the range of Accossato front brake master cylinders for motorcycles, including radial brake master cylinders designed for road, sport, racing, naked, touring, custom, adventure and supermoto motorcycles. This category includes models with different piston diameters, brake lever ratios, finishes and configurations, developed to deliver precise control, excellent modulation and reliable braking performance.

How to Choose a Front Brake Master Cylinder

The front brake master cylinder converts the force applied to the brake lever into the hydraulic pressure that operates the brake calipers.

Selecting the correct motorcycle brake master cylinder requires checking the compatibility of the entire motorcycle brake system, not just the piston diameter.

Before purchasing, always verify:

• motorcycle make, model and year;
• number of front brake discs;
• brake caliper type and piston configuration;
• master cylinder piston diameter;
• brake lever ratio;
• any aftermarket modifications already fitted.

Piston Diameter

Accossato brake master cylinders are available with different piston diameters, including 14, 16, 17, 18 and 19 mm.

Choosing the correct piston diameter is essential to achieve the proper hydraulic ratio between the brake master cylinder and brake calipers. It should always be matched to the installed braking system.

A master cylinder with a different piston diameter may change:

• brake lever travel;
• braking effort;
• modulation;
• brake lever feel.

For this reason, always verify the complete brake system configuration before replacing the master cylinder.

Brake Lever Ratio

In addition to different piston diameters, many Accossato brake master cylinders are available with different brake lever ratios or with the PRS (Power Ratio System), which allows the lever ratio to be adjusted according to the selected model.

The correct brake lever ratio should be chosen according to riding style, motorcycle use and brake system configuration.

Materials and Finishes

Depending on the model, Accossato brake master cylinders may be:

• CNC-machined from billet aluminium;
• forged;
• available with a natural or black anodised body;
• customised with different lever and adjuster colours.

The range includes CNC brake master cylinders and forged brake master cylinders for different riding applications.

Specifications and finishes vary according to the product code. Always refer to the product page for complete technical details.

Compatibility

Use the AG Moto Motorcycle Finder by selecting:

• manufacturer;
• engine capacity;
• model;
• year.

Then compare the product specifications with the actual configuration of your motorcycle.

If your motorcycle is already fitted with aftermarket brake calipers, brake discs, brake lines or other components, always verify brake master cylinder fitment and motorcycle brake master cylinder compatibility with the complete braking system before purchasing.

Installation

After installing the brake master cylinder:

• correctly install the brake fluid reservoir, where applicable;
• fill the hydraulic circuit;
• bleed the braking system completely;
• check for hydraulic leaks;
• verify correct brake lever operation before riding.

After installation, always test the braking system in a safe environment before normal road use.

The brake master cylinder is a critical safety component and should always be installed by qualified personnel.

Choose the Accossato front brake master cylinder that best matches your motorcycle, brake calipers and braking system configuration. Shop online at AG Moto, the official Accossato Racing online store.