Box One BMX Race Disc Brake Adapter (Sliding Dropout) - Black

The Box Disc Brake Adapter is designed to help improve braking control on frames where disc brakes were not standard. Compatible with 2 types of dropouts and 3-10mm hubs, in the right configurations, the Box Disc Brake Adapter goes over your hub’s axle and mates with the frame’s dropout, allowing mounting of a standard post mount disc brake caliper.