- Components
- Electronic Shifting
- Shimano D12
- m part 6mm spacer w/6 degree di2 junction box mount in black
- This item replaces one of your standard Headset Spacers and allows a Di2 junction box to be mounted without rubber bands around stem Features Alloy headset spacer with plastic overmould Available in 6 or 17 degrees Unobtrusive, lightweight design