The BOX One Disc Brake Adaptor comes in two configurations, one that is compatible with frames with "sliding dropouts" and one that's compatible with "standard dropouts". Both are manufactured to suit 140mm rotors. Read carefully through the fitment guide on the Specification tab to ensure you select the correct adapter for the frame type you are fitting this adapter to.
Box Disc Brake Adapter
The all NEW 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.
Please note this product is NOT universally compatible and we strongly recommend reading the Compatibility and Installation instructions for details before purchasing.
The Box Disc Brake Adapter is NOT compatible with all frames, and purchase/installation requires special attention to your frame’s dropouts for compatibility. We do not recommend composite frames for this adapter.
There are two different versions of the Box Disc Brake Adapter.
Both variations of the adapter come standard with two adapter rings which makes the adapter compatible with 3 different 10mm hubs only. Will not fit hubs with 15/20 or step down axles. We recommend using the Box Three Pro Disc hub as it provides the best compatibility with our adapter. Some setups with Stealth and Onyx hubs may require the dropouts spread for proper adapter fitment.
The Box Disc Brake Adapter has many related components available from Box Components.
The Box Disc Brake Adapter requires specific installation instructions, please read all instructions for your adapter before installation.
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engagement of the adapter on dropout. This may require a half link.
Note: some configurations may require the dropouts spread for pro proper adapter fitment.
This version is compatible with specific sliding plate dropouts with inserts. Please see the compatibility section for more details.
*Within Australia only. Excludes bikes and bulky items
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