Now Available! 180mm to 203mm Post mount adaptors. These are commonly used with 203mm rotors on 2016–2019 Fox 36 forks and on bikes with 180mm rear post mounts. 

Adaptors available for Shimano, SRAM, Hope, Hayes etc. rotors:

• 180mm
• 183mm
• 185mm
• 203mm 

CNC machined from 6061 T6511 aluminum. Machined surfaces allow for better calliper alignment and more rigid brake set-up.

The Post Mount standard is universal to the front and rear brakes.

Some frames/forks use a 160mm rotor with no adaptor, some use a 180mm with no adaptor. Check your frame. These adaptors can be used on both forks and frames with 160mm or 180mm posts.

Picking the Correct Adaptor

To go from a 160mm post mount to 203mm rotor you will need a 203mm adaptor.

To go from a 160mm post mount to 200mm rotor you will need a 200mm adaptor.

To go from a 160mm post mount to 180mm rotor you will need a 180mm adaptor and so on. 

For 2016+ Fox 36 and 180mm rear brake mounts: 

You will need the 180–203mm adapter to work with the 180mm post mount and a 203mm rotor.

Going from a 180mm post mount to a 200mm rotor requires the regular 180mm adapter.