Shimano Dura-Ace FC-R9200 12-Speed Chainring - 50t Asymmetric 110 BCD Black NK. Shimano Dura-Ace FC-R9200 chainrings are constructed with high quality aluminum and are compatible with FC-R9200 and FC-9200-P 2x 12-speed cranksets.

Asymmetric 110 BCD

Compatible with HG 12-speed chains