RIDEA brompton 專用雙盤轉接座，開啟雙盤改裝的關鍵零件！完全針對brompton車款設計的角度，BIKEfun改裝實測：改雙盤OK！轉接座本體採用鋁合金CNC製作。

建議售價：2500元

The key to modification of double chainring for Brompton is designed by RIDEA. Special angel is only designed for Brompton unique frame and tasting by BIKEfun is working very magnificent! Adaptor of double chainring is made of whole aluminum alloy ingot by CNC processing.