Brake Calliper BR-M9100 BR-M8100 BR-M7100 BR-M6100 Resin Without fin K03TI G03A G03S With fin J03A Metal Without fin K04TI G04S With fin J04C Rotor CenterLock 140mm 160mm 180mm 203mm RT-MT900 CenterLock 140mm 160mm 180mm 203mm RT-MT800 CenterLock 140mm 160mm 180mm 203mm SM-RT70 CenterLock 160mm 180mm 203mm SM-RT64 6 Bolt 160mm 180mm 203mm SM-RT66 Mountain Bike Disc Brake Pads & Rotor 2 Piston