★ FROM THE CATALOGUE
座管束
高級輕量鋁合金座管束，專為 Columbus External Butted 鋼製立管的非標準外徑設計，完美解決一般座管束無法安裝的問題。提供三種直徑選擇，讓你的客製化組車更加俐落完整。
specs
Figures as published in the Columbus components catalogue.
- Material
- Lightweight aluminium
- 相容性
- Columbus External Butted steel seat tubes