When it comes to disk brakes, perfect tolerances matter, and these adapters are machined to extremely high tolerances here in Chico California for a precision fit.

These particular adapters allow you to mount post-mount disk brakes onto flat-mount forks. They come in either 20mm or 0mm sizes. To figure out what size adapter you need, first find out what size rotor the fork was designed for. For instance, if the fork was designed for a 140mm rotor (most flat-mount forks are), and that’s the size rotor you’re using, you’ll use the 0mm adapter. If you’d like to bump up to a 160mm rotor on that same fork, you’ll want the 20mm adapter. If you’re trying to run 180 rotors, this might not work, it depends on your fork design.

Bigger rotors=more stopping power, so opt for the bigger rotor if you have the option.

(2) 5x14mm screws for mounting the adapter to the fork are included, and you’ll use the hardware that came with your disk brake to mount the brake to the adapter.

We also sell normal flat-mount to flat-mount adapters HERE.

We also sell normal post-mount and I.S. adapters HERE.