Box One BMX Disc Brake Adaptor Sliding Dropout (10mm) (Black)

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Box Disc Brake Adapter (Sliding Dropout)


  • Designed to help improve braking control on frames where disc brakes were not standard
  • 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
  • Available for standard or sliding dropouts with inserts
  • Recommended maximum rider weight 150lbs
  • Compatible with the Box Three Pro disc, Stealth 10mm, and Onyx 10mm disc hubs
  • Standard 10mm Dropouts - Standard dropout configuration, dropout must be between 6-8mm thick, and have a flat inside face
  • Sliding Plate Dropout - Found on many Thrill, Haro, DK and Stay Strong aluminum frames
  • *Please note this product is NOT universally compatible, see or your local salesmen for details

140mm Brake Rotor Only
Material: 6061-T6 Aluminum
Weight: 65 g

This version is compatible with specific sliding plate dropouts with inserts 

This product was added to our catalog on February 26, 2020