The Box One Cassette Spacer Kit is extruded and CNC-machined from 6061-T6 aluminum and features a super lightweight minimalist design.

Packaged in 4 piece kits which provide 1 to 10 millimeters of spacing adjustment to dial in that chain line.


Adjustable from 1mm to 10mm 
XO Skeleton Design
Shimano Compatible
Extremely Lightweight
Anodized Color Finish


 Material 6061-T6 Aluminum
Process Extruded/CNC Machined
Spacing 1 to 10mm
Finish Anodized 

Whats in the Box?

Each pack includes the following spacers: (2) one millimeter. (1) three millimeter, (1) five millimeter

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