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.

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

This version is compatible with standard 10mm dropouts without inserts.