Shimano FC-09 52t 11-Speed Asymmetric 110BCD Black Chainring MFPN=00.5315.028.030 e-Martello features a 4C Graphene

e-Martello features a 4C Graphene compound combined with a moto-inspired tread design and progressive width siping

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Shimano FC-09 52t 11-Speed Asymmetric 110BCD Black Chainring MFPN=00.5315.028.030 e-Martello features a 4C GrapheneSystem supremacy Shimanos Dura Ace 11 speed asymmetric chainrings provide clean chain engagement for reliable riding. The 110 BCD bolt pattern is compatible only with cranks with a matching 110 BCD. System engineering at its peak. Redesigned gear teeth profile to fit wider gear pitch Optimum power transfer Best balance for lighter weight and efficiency 4 arm construction Shorter length of rear center with O. L. D. 135mm Hollowtech II