Upgrading Rotors/ Brake Mounts

If you are looking to upgrade brake rotors you will also need to install a new brake mount. To determine the brake mount required for a given rotor size upgrade you need this information:
  • Style of brake mount on the bike - IS or POST
  • Size of brake rotor you are swapping to - 160mm, 180mm, 203mm

Identifying Brake Mount Style

There are two styles of Break Mounts - IS and POST

  • IS mount: Mounting Bolts are perpendicular to the rotor's plane.
  • POST mount: Mounting Bolts are parallel to the rotor's plane.
See the attached images for examples.

Which Brake Mount do I need?

Once you have identified the Brake Mount style, you will need to know the size of the brake rotor you are switching to - the common options are 160mm, 180mm, and 203mm

Lastly, you will need to search online for the following:


If you are still unsure or this doesn't solve your problem contact us via the Contact Us option.