齒盤 MA11-531B-NT

MA11-531B-NT

曲柄: 170mm (Forged AL6061-T6)
齒盤: 22/32/44T(22/32T steel, 44T Alloy)
中軸:Cups-BC-1.37x24/68mm/73mm
鍊線: 48.5mm
BCD: 64/104mm
Speed: 3x9s
Weight: 870g