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The Wolf Tooth Post to Flat Mount Brake Adapter allows flat mount brakes to be added to a frame or fork that was designed for post mount brakes. This is a vital component for cyclists who want to run a road groupset on a mountain bike frame. It is important to note that this is a +20mm adapter, which means a 140mm post mount native size will only work with a 160mm rotor, just as a 160mm post mount native size will only work with a 180mm rotor, and so on. Wolf Tooth Post to Flat Mount Brake Adapters are CNC machined with 6061-T6 aluminum. These are sold individually.


  • Fits on post mount native sizes 140, 160, and 180mm
  • Works with rotor sizes 160, 180, and 200mm
  • Tested with SRAM and Shimano brakes
  • Requires minimum 13mm between top of brake boss to frame/fork
  • Not compatible with Fox Step Cast Forks
  • Includes (2x) M5x13mm flat head bolts for flat mount caliper

    and (2x) M6x15mm socket head bolts for post mount

Post to Flat mount brake adapter

Tech Specs

    Weight:  17g
    Material: 6061-T6 Aluminum
      Patent and trademark information