曲柄: 170mm (Forged AL6061-T6) 齒盤: 39/53T (AL-7075.CNC) 中軸: Cups-BC-1.37x24/68mm/73mm 鍊線: 43.5mm BCD: 130mm 變速: 2x9s/2x10s 重量: 885g
曲柄set RA2-721C-NT