曲柄: 170mm (Forged AL6061-T6) 齒盤: 32/34/36/38T (Alloy 7075-CNC) 中軸:Cups-BC-1.37x24/68mm/73mm 鍊線: 51mm BCD: 104mm Speed: 1x11s
曲柄set MA9-711D-NT