Radial brake calipers

Accossato Radial Brake Calipers for Motorcycles

Discover the range of Accossato radial brake calipers for motorcycles, designed as high-performance replacement and upgrade brake calipers for road bikes, sport bikes, racing motorcycles, naked bikes, touring motorcycles, supermoto models and specialised applications.

The range includes front and rear radial brake calipers with different mounting centres, offsets, piston configurations, materials and finishes. Whether you are replacing original components or planning a motorcycle brake upgrade, every performance brake caliper is engineered for a specific application.

Accossato radial brake calipers are developed to deliver outstanding braking precision, modulation and reliability. Every model should be selected only after carefully verifying the technical specifications of both the motorcycle and the complete motorcycle brake system.

What Is a Radial Brake Caliper?

A radial mount brake caliper uses a mounting system in which the fixing bolts are positioned parallel to the radius of the brake disc and attach directly to the fork or to a dedicated mounting adapter.

This mounting configuration is widely used on modern high-performance and sports motorcycles. However, radial mounting alone does not automatically improve braking performance. The overall behaviour of the braking system depends on the correct combination of the brake master cylinder, brake caliper, brake discs, brake pads and the overall hydraulic setup.

Available Mounting Centres

The Accossato range includes radial brake calipers with several mounting centres, including:

• 60 mm
• 69.5 mm
• 82 mm
• 86.3 mm
• 100 mm
• 108 mm

The mounting centre is the distance measured between the centres of the caliper mounting holes, also commonly referred to as caliper bolt spacing.

Before purchasing, always verify:

• mounting centre;
• caliper offset;
• brake disc diameter;
• brake disc thickness;
• braking track height;
• caliper position;
• available clearance between the brake disc, wheel and fork.

Two brake calipers with the same mounting centre may have different offsets and may not be compatible with the same motorcycle.

Brake Caliper Offset

The offset defines the position of the brake caliper relative to its mounting surface.

It is one of the most important measurements when choosing a brake caliper. An incorrect offset prevents the brake pads from aligning correctly with the braking track, even when the mounting centre is correct. Correct caliper offset is essential for accurate brake pad alignment and full contact with the braking track.

For proper radial brake caliper compatibility, always verify together:

• mounting centre;
• offset;
• brake disc diameter;
• brake disc thickness;
• mounting adapter, where required;
• braking track position.

Front and Rear Radial Brake Calipers

The collection includes radial brake calipers designed for both front braking systems and specific rear brake applications.

Front and rear radial brake calipers are designed for different hydraulic and mechanical requirements and must not be interchanged unless specifically approved for that application.

Always check the product page for:

• installation position;
• right or left side, where applicable;
• single-disc or dual-disc configuration;
• quantity supplied;
• compatible motorcycle applications.

Number and Diameter of Pistons

Accossato radial brake calipers are available with different piston configurations.

The number, diameter and material of the pistons determine the total hydraulic area of the caliper and should always be matched to the brake master cylinder specifications.

When modifying the braking system, always verify:

• brake master cylinder piston diameter;
• hydraulic ratio between the master cylinder and caliper;
• single-disc or dual-disc configuration;
• intended motorcycle use;
• desired brake lever feel and response.

A caliper with a hydraulic area that differs significantly from the original system may noticeably change brake lever travel and overall braking performance.

Forged and CNC-Machined Brake Calipers

The Accossato range includes brake calipers manufactured using different production methods.

It features CNC-machined brake calipers, forged monobloc brake calipers and racing brake calipers developed specifically for high-performance applications.

The manufacturing technology varies from one part number to another. Always consult the product specifications to verify the material, manufacturing method, piston configuration, weight and supplied equipment.

Brake Pads

Depending on the model, brake calipers may be supplied with brake pads included or may require them to be purchased separately.

Before ordering, always verify:

• whether brake pads are included;
• brake pad compatibility and part number;
• available friction compound;
• number of brake pads required;
• included accessories and spare parts.

Choose the brake pad compound according to the brake disc, motorcycle application and operating temperatures.

How to Find the Correct Radial Brake Caliper

Use the AG Moto Motorcycle Finder by selecting:

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

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

If your motorcycle has been modified with non-original forks, brake discs, wheels, brake master cylinders or mounting adapters, all braking system dimensions should be checked carefully before purchasing.

Installation and Safety

The brake caliper is one of the most important components of the motorcycle brake system.

During installation, always verify:

• correct alignment with the brake disc;
• proper tightening of the brake caliper;
• correct installation of any mounting adapter;
• correct brake hose routing;
• absence of interference;
• correct brake bleeding;
• absence of hydraulic leaks;
• firm and consistent brake lever pressure.

Before riding, always ensure that the entire braking system operates correctly.

For maximum safety and performance, installation and final inspection should always be carried out by qualified personnel.

Choose the Accossato radial brake caliper that best matches your motorcycle brake system, brake caliper fitment and performance requirements. Shop online at AG Moto, the official Accossato Racing online store.