- 30.0mm internal diameter
- Premium Cane Creek's 40-Series Crown races can be used during headset overhauls and/or fork replacements to ensure consistent precision components/operation
- 40-Series Crown Races are steel face-sealed type with blue rubber seal
- Compatible with 41 and 42mm lower headset bearings
- Compatible with most (1-1/8") straight steerer tubes
- steel construction