曲柄: 170mm (Forged AL6061-T6) 齒盤: 34/50T (AL-7075.CNC) 中軸:Cups-BC-1.37x24/68mm/73mm 鍊線: 43.5mm BCD: 110mm Speed: 2x9s/2x10s Weight: 810g
曲柄set RA6-722C-NT