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These models are available for online purchasing and can be shipped directly to you.
Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.
Chainring Teeth
These rings can be used in the outer position.
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Shimano Ultegra R8000 53t 110mm 11-Speed Chainring for 39/53t
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Understanding Chainring Measurements
