Box Two Headset Adapters

6061 Aluminum
Black Anodized
Allows 1" Steerer tubes to be compatible with 1-1/8" headtube Frames

This adapter is not designed to be used with integrated headsets and can cause damage to your headset or fork if not used properly.

Box One XS Fork
Box One XE Fork
Frames with a Headtube that accepts a 1-1/8" Headset

Material Aluminum

Is this adapter compatible with 1-1/8" steerer-tube forks?

No, these adapters are only compatible with 1" steerer-tube forks and are designed to convert 1" steerer tube forks to 1-1/8"; This makes them compatible with 1-1/8" frames.

Is this adapter compatible with a 1-1/8" head tube Frame?
Yes, this adapter is specifically designed to adapt 1" forks to be compatible with 1-1/8" headtube Frames.