Ultegra 10-speed FC-6603 triple chainrings Item Specifications Color: Silver Material: Aluminum Teeth: 39teeth Chainring BCD: 130mm Ring Position: Middle Chain Compatibility: Shimano 10,SRAM 10 Defined Color: Silver
| | Shimano Ultegra FC6603 Chainring |  | 30.6 |  |
 | Shimano Ultegra FC-6603 39 Tooth 10-Speed Triple Chainring | 31.99 | | |
 | Shimano Ultegra 6603 10sp Triple Middle Road Bike Chainring |  | 34.99 | |