SHIMANO Tiagra 4600 10-Speed FC-4650 Chainring 50T (F-Type, Silver) - Y1MH98100 Shimano Small Parts Road Bike Tiagra 4600 10-Speed Small Replacement Part for: Shimano FC-4650 Chainring 50T (F-Type, Silver) Used as part of Shimano Bike Parts; Tiagra 4600 10-Speed