Dura-Ace R9100 11-Speed - Shimano Dura-Ace R9100 Chainring - 52 Tooth, 11-Speed,

Shimano Dura-Ace R9100 Chainring - 52 Tooth, 11-Speed, 110mm BCD, For 52-36T Combination. MPN: Y1VP98020 - Shimano - Dura-Ace R9100 11-Speed - Chainring. 52 Tooth chainring is designed to be used as the outer chainring in a 52/36 tooth combination.

eBay