ROTOR Round Ring BCD110/80X4 SHIMANO® GRX Shimano took an early lead in the gravel category when it introduced its dedicated GRX groupset for gravel. Not one to follow, ROTOR quickly caught up with compatible 48/31 and 46/30 Round Rings combinations with BCD 110/80×4 for Shimano® GRX and ROTOR BCD110/80×4 cranks. CHARACTERISTICS Sizes: 48/31 | 46/30 BCD: 110/80×4 Weight: 149.5 g (48/31)  | 123 g (46/30) Ovality: 0 % Chainline: 46.9 mm Material: 7075-T6 aluminum alloy 100% CNC-machined Cranks compatible: Shimano® GRX 2x11s, ROTOR BCD110/80×4 Chains compatible: Shimano® 11s, KMC® 11s ROTOR PART NUMBERS C01-531-13010-0 C01-531-15010-0 C01-531-30010-0 C01-531-31010-0
