Shimano Dura-Ace 9000 Chainring – 50 Tooth, 11-Speed, 110mm BCD, For 50-34T
Shimano Dura-Ace 9000 Chainring – 50 Tooth, 11-Speed, 110mm BCD, For 50-34T Combination. Chainring BCD 110 Asymmm. MPN: Y1N298080 – Shimano – Dura-Ace 9000 11-Speed Chainring – Chainring. Chain Compatibility Shimano 11.