Lightweight baby! The Box One Cassette Spacer Kit is extruded and CNC-machined from 6061-T6 aluminium, which means a super lightweight, minimalist design.
With 4 pieces to provide 1 to 10 millimeters of spacing adjustment, you can dial in that chain line perfectly.
- Includes the following spacers: (2) one millimeter (1) three millimeter (1) five millimeter
- Adjustable from 1mm to 10mm
- XO Skeleton Design
- Shimano® Compatible
- Extremely Lightweight