Box Cosine 4-Bolt Chainring Black 41T Bx-Cr144B41T-Bk

Made in the US from 6061 T-6 aluminum alloy, Cosine chainrings are round and true. They fit 104 BCD four-bolt cranks. Available in matte black anodized with laser-etched graphics in 38-45-tooth sizes.


Price: 40.49
 

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