julio 27, 2026Publicado Por En julio 27, 2026Vintage Shimano 30T Chainring 30 Tooth 74 BCD SG A-30 9S Silver Alloy BikeMounting holes have light tool marks. Number of teeth: 30T; intended for 9-speed drivetrains. Logos and markings: stamped SHIMANO SG A-30, 9S, and YH1 on the ring face.