Brembo GR-PRO +20mm Brake Adapter | Official Brembo MTB Disc Brake Mount Adapter

Brembo GR-PRO +20mm Brake Adapter is an official Brembo mount adapter designed for fitting Brembo GR-PRO mountain bike disc brakes with a larger rotor setup.

This +20mm adapter positions the caliper for a rotor with a diameter 20mm larger than the size specified for the original frame or fork mount. The +20mm designation refers to the increase in rotor diameter, not the physical distance the caliper moves.

The Brembo GR-PRO braking system has been developed as a complete performance package, including master cylinders, calipers, discs, pads, hoses, mounts and brackets. This adapter is part of that system and is designed to help maintain correct caliper alignment when using larger Brembo GR-PRO rotors.

Ideal for downhill, enduro, e-bike and aggressive MTB riding where riders want the extra braking leverage, heat capacity and control of a bigger rotor.

Key Features

• Official Brembo GR-PRO +20mm brake adapter
• Positions the caliper for a 20mm increase in rotor diameter
• Suitable for selected MTB, enduro, downhill and e-bike brake applications
• Designed for use with Brembo GR-PRO brake systems
• Ideal when upgrading rotor size for more braking control and heat capacity
• Precision fitment for correct caliper and rotor alignment

Compatibility

Designed for Brembo GR-PRO hydraulic MTB brake systems.

A +20mm adapter is commonly used when increasing rotor diameter by 20mm, but exact compatibility depends on your frame or fork mount, original rotor size and final rotor size.

Check the original frame or fork mount size, the intended rotor diameter and the manufacturer’s maximum permitted rotor size before ordering. The currently fitted rotor size alone does not determine the correct adapter.

Common Rotor Size Changes

• 180mm rotor to 200mm rotor (relative to the original mount size)
• 200mm rotor to 220mm rotor (relative to the original mount size)

Important: Brake adapters are not universal. Always confirm the correct adapter type for your frame, fork, brake caliper and rotor size before installation.