Disc Brake Adaptors

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Disc Brake Adapters for Bikes

A disc brake adapter positions the caliper for a particular mount and rotor combination. Shop adapters from SRAM, Shimano, Hope, Magura, TRP, Hayes and more. Whether you're replacing hardware or changing rotor size, start with the exact brake, frame and fork specifications.

Post Mount, IS and Flat Mount

Identify the mount on the frame or fork and the mount your caliper uses. Post mount, IS and flat mount require different hardware, and a front adapter may have a different application from a rear one. Check the manufacturer's fit chart and the product's stated use, rather than choosing by appearance or brand alone.

Rotor Size and Hardware Matter

Match the adapter to the mount's native rotor size and the rotor diameter you intend to run. A 200mm rotor and a 203mm rotor are different sizes. Confirm that the frame, fork and brake support the chosen rotor and use the specified bolts, washers, orientation and torque. A larger adapter doesn't make a larger rotor compatible with every fork or frame.

Browse disc brake rotors and calipers if you're changing more of the system. If the adapter codes look like alphabet soup, send our team your brake model, fork or frame model, current rotor size and desired rotor size. Those details make finding the right adapter much easier.