- Tapered steerers (when offered) are designated by 1.5>1-1/8" spec info
- Replacement CSU (crown/steerer/upper) units and BoXXer crowns
- BoXXer top crown sizing reference (head tube+headset): short (3/4" drop): under 160mm/tall (2" drop): 160-190mm
| Year | 2024+ |
| Model | BoXXer D1+ |
| Description | 38mm |