This adapter allows you to use a Flatmount caliper with a +20mm brake rotor on a frame or fork that was designed Postmount standard.
Compatibility:
Fits on postmount native sizes 140, 160, and 180mm frames or fork
Works with rotor sizes 160, 180, and 200mm
IMPORTANT : A minimum clearance of 13mm is required between Postmount brackets. Please refer to the drawing carefully before purchasing to confirm compatibility with your fork or frame