一體式六速飛輪 12-28T（Unibody 6-Speed Cassette 12-28T）

• Balanced gear spread for versatile riding conditions
• Integrated design minimizes component separation and wear
• Heat-treated for strength, ideal for daily riding or light touring

• 齒比均衡，應對多變路況更靈活
• 一體化結構減少磨損與晃動問題
• 熱處理工藝強化強度，適合日常或短途旅行