曲柄: 170mm (Forged AL6061-T6) 齒盤: 28/40T,26/38T (Alloy 7075-CNC) 中軸:Cups-BC-1.37x24/68mm/73mm 鍊線: 49mm BCD: 64/104mm Speed: 2x10s Weight: 765g
曲柄set MA9-721C-NT
中文 (繁體) 
