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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.
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Shimano chainrings for Tiagra FC-4703 3x crankset features a refined gear shape optimized for HG-X chains Crafted with high strength aluminum … read more
your price $9.99
BuyPART NUM 442833 Shimano Sora R3030 (non-chainring guard model) 30t 74mm 9-Speed Chainring, Black Item Specifications Color: Black Material: Steel Chainring BCD: … read more
your price $10.99
BuyPART NUM 727616 "Shimano practices good local citizenship, pursues continued access to those areas that are enjoyed by outdoor enthusiasts, and is committed to minimizing our impact on the environment."
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 inner position.
Buy this product and your entire order ships for free.
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