Post to Flat Mount Brake Adapter Size:+20mm Post to Flat Mount Brake Adapter Shimano changed to this sometime

Shimano changed to this sometime in 2013

Weights:   30T • 65g  |  32T • 69g  |  34T • 73g  |  36T • 77g

Application: Hot apply with an iron at 150°C (302°F)

36mm installed diameter

this kids’ mountain bike doesn't sacrifice form for function

Post to Flat Mount Brake Adapter Size:+20mm Post to Flat Mount Brake Adapter Shimano changed to this sometimeThe 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