齒盤 FA2-723C

FA2-723C

曲柄: 170mm (Forged AL6061-T6)
齒盤: 46/56T(AL7075-T6 CNC)
中軸:Taper Square 117.5mm/M8
BCD: 130mm
鍊線: 43.5mm
Speed: 2x9s/10s