Profile Design Boa Quill Stems are constructed of 6061-T6 Aluminum.
- For 1-1/8" threaded headsets: 24mm range from minimum insertion to max insertion; 65mm from minimum insertion to top of quill
- Quill insertion diameter: 25.4mm for 1-1/8" Quill stem
Bar Diameter: 25.4mm
Steerer Diameter: 1-1/8" Threaded
Quill Insertion Diameter: 25.4mm
Stem Angle: 20° or 40°