Box One BMX Disc Brake Adapter (Standard Dropout) atlas WORKING SIZE: 20x1-1/8

WORKING SIZE: 20x1-1/8

and the first of its kind on the market

DRIVER: Ultra Drive 204 point engagement with 6 pawls

Weight: 287g

65oz/387g (full kit)

Box One BMX Disc Brake Adapter (Standard Dropout) atlas WORKING SIZE: 20x1-1/8Box One Bmx Disc Brake Adapter (Standard Dropout) was designed specifically for frames not necessarily intended to be compatible with a disc brake setup. Compatible with 3 10mm hubs, but please read the product specifications and manual carefully before purchasing as this is not universally compatible. Also, do note the 150 lb. rider weight limit. Product Manual Compatibility Box Three Pro Disc Hub Box Three Brake Caliper Box Three 140mm Disc Brake