CNC machined from billet aluminum, the Hope Brake Caliper Adapter is a Post Mount extender that mounts onto your fork to accommodate a 220 mm rotor.There is 1 size available: 20 mm. Most DH forks (Fox, Marzocchi, Öhlins, RockShox, Manitou…) are at the 203 mm Post Mount standard and need the 17 mm adapter. This is also the required size to adapt on the proprietary DNM mounting system (Sur Ron, Talaria).A few forks (notably the EXT Ferro) follow the more recent metric standard for 200 mm discs, in this case, you need the 20 mm adapter.
