Box One BMX Disc Brake Adapter (Standard Dropout)

$49.99 Save
Size 10mm

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


Please note this product is NOT universally compatible. We strongly recommend reading the Compatibility and Installation instructions for details before purchasing.

This version is compatible with standard 10mm dropouts without inserts. Please see the compatibility section for more details.

Product Manual

    Retrofit Non-Disc Brake Frames for Disc Brakes
    Mates with the Frame’s Standard Dropout Allowing Mounting of a Standard Post Mount Disc Brake Caliper
    Disc Brakes Allow for Improved Braking over Rim Brakes

    Material: 6061-T6 Aluminum
    Process: Extruded & CNC Machined
    Finish: Anodized w/Laser-Etched Graphics
    Size: 10mm
    Compatibility:
    • Mount: Post Mount Caliper
    • Brake Rotor: 140mm
    • Hubs: 3-10mm
    • Dropout: Standard
    Weight: 60g
    Rider Weight Limit: 150lbs

    Box Three Pro Disc Hub
    Box Three Brake Caliper
    Box Three 140mm Disc Brake Rotor
    ALL Box Brake Levers
    Box Linear Brake Cables

    SKUBX-BA1-DAA10-BK