Shimano ColorSeries colorSales model codeFC-RX600Shimano Part CodeFront ChainwheelBike DisciplineGravelUsageOn bikeCrank arm length (mm)175 mmBolt circel diameter110 / 80Chain protectorWithout Chain protectorCrank technology2-pieceGear arms4Compatible chainHG-EV 11-speed/ HG-X11Gear speed(is Chain Ring Combination)40TRear speeds11Chain wheelsSingle