The OSymetric Ergo Aerosymetric Triathlon Chainring is the choice of numerous athletes competing in the most prestigious contests in the world OSymetrics chain rings have been designed in a custom oval shape to ensure that every pedal stroke transfers maximum power to the rear wheel This chainring is truly top tier chainring technology Key Features Made for triathlon use Compatible with Shimano FSA Stringlight 1110 Vittesses Speed 110mm BCD 7075 T6 aluminium Oval shape

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