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Alloy narrow-wide tooth profile prevents chain drop 10-12sp compatible For use with Sunrace FCMXO crankarms (UQ1105) … read more
your price $27.99Info
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.
These single chain rings have special properties which help retain the chain on the ring.
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