BOX Components (United States) - 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 brands of 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.

Adapter specifications:

• Post Mount140mm Rotor Only
• 6061-T6 Aluminum
• Black Anodized
• 10mm Standard Dropout - 60g
• Fits 3 - 10mm hubs (See Compatibility Below)
• Sliding dropout - 65g

Adapter compatibility:

The Adapter is not compatible with all frames and requires special attention to your frame’s dropouts for compatibility. There are two different versions of the Box Disc Brake Adapter.

• 3/8"ths / 10mm Dropouts - Dropout must be between 3-6mm thick.
• Sliding Plate Dropout - Specific frames only.

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.

• Box Three Pro Disc (Needs no adapter ring).
• Stealth 10mm Disc (Requires S-Spec adapter ring).
• Onyx 10mm Disc (Requires O-Spec adapter ring).

Related components:

The Box Disc Brake Adapter has many related components available from BoxComponents.

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