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Add flat mount brakes to post mount frames and forks with our newest innovation: the Wolf Tooth Post to Flat Mount Brake Adapter. This component allows flat mount brakes to be added to a frame or fork that was designed for post mount brakes—an asset for cyclists who want to run road groupsets on mountain bike frames.

Two Wolf Tooth Post to Flat Mount Brake Adapters sitting on a table next to a pair of measurement calipers and wrenches.

The Post to Flat Mount Adapter fits on 140mm, 160mm, and 180mm post mount native sizes. It’s important to note that the adapter is +20mm, 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.

A technical graphic showing a flat mount caliper mounted onto a post mount frame or fork with the Wolf Tooth Post to Flat Mount Brake Adapter.

Our Post to Flat Mount Brake Adapter has been tested with both SRAM and Shimano brakes and includes two (2) M5x13mm flat head bolts for flat mount calipers in addition to two (2) M6x15mm socket head bolts for post mount. A minimum of 13mm between the top of the brake boss to the frame/fork is required for an accurate installation.

Installation of the Wolf Tooth Post to Flat Mount Brake Adapter

The Wolf Tooth Post to Flat Mount Brake Adapter pairs well with: 

  • ShiftMount: An adapter mount that allows you to integrate SRAM and Shimano shifters with several different brakes from Shimano, SRAM, and Magura as well as mount shifters directly to handlebars independent of brakes.
  • RoadLink DM: A component that replaces Shimano’s stock direct mount link, allowing relocation of the bike’s derailleur to provide clearance for larger-than-stock range cassettes while maintaining chain wrap and improving shifting.
  • Tanpan: A component that makes Shimano 10- and 11-speed road shifters work with 10- and 11-speed mountain bike rear derailleurs. 

All Wolf Tooth Post to Flat Mount Brake Adapters are CNC machined with 6061-T6 aluminum and sold individually. Learn more here!

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