ZRACE 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. 

Brand: ZRACE
Material: 6061 aluminum alloy
Heat treatment: T6
Weight: 16g
Compatibility:
Fits on post mount native sizes 140, 160, and 180mm
Works with rotor sizes 160, 180, and 200mm
Requires minimum 13mm between top of brake boss to frame/fork
Includes (2x) M5x13mm flat head bolts for flat mount caliper
and (2x) M6x15mm socket head bolts for post mount