Match your brake. Choose your mount.

Brake Caliper Adapters & Mounting Hardware

Shop Aztec Flat Mount adapters, Brembo GR-PRO caliper adapters and titanium mounting hardware. Match the caliper interface, original frame or fork mount and rotor size before choosing.

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Brake caliper adapters

Aztec configurations for Flat Mount frames and forks, plus Brembo GR-PRO +20 mm and +40 mm adapters.

Mounting bolts & washers

M5 button-head bolts, dedicated Shimano Flat Mount bolts, and M6 caliper bolts and washers. Match the bolt type and length to your brake and mount; M6 bolts and cup-and-cone washers are for compatible Post Mount setups.

Handlebar control adapter

Brembo’s SRAM-type adapter mounts a compatible control to the GR-PRO lever clamp. It does not change caliper or rotor fitment.

Brake adapter & mounting questions

How do I choose a brake caliper adapter?

Identify the caliper interface, frame or fork mounting standard, original mount size, front or rear position and target rotor diameter. Match all of these to the selected adapter.

What do +20 mm and +40 mm mean?

These figures refer to the increase in rotor diameter relative to the original frame or fork mount size. They do not describe the physical distance the caliper moves.

Which bolts do Flat Mount adapters use?

Use the specified M5 or dedicated Flat Mount bolts in the correct length. Rear fixing length depends on frame thickness and the brake manufacturer’s requirements. The M6 bolts and cup-and-cone washers shown here are for compatible Post Mount setups, not the Flat Mount frame or fork fixings.

Is the SRAM Matchmaker adapter for the caliper?

No. The Brembo GR-PRO SRAM Matchmaker adapter attaches compatible handlebar controls to the brake lever clamp. It is separate from caliper and rotor mounting hardware.

Need help matching your mount?

Send your brake model, frame or fork mount details and the rotor size you want to use.

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