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 instructions for details before purchasing.

This version is compatible with specific sliding plate dropouts with inserts. Please see the compatibility section for more details.

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: Sliding
Weight: 65g
Rider Weight Limit: 150lbs