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The Laurel Cyclery is OPEN for sales and service of bicycles, parts and accessories. If the door is locked, knock and we'll come out to assist you. Use this website to purchase online and collect in-stock parts and accessories the same day. To schedule bike repair, check out our online appointment system. Questions? E-mail us at

BOX Cosine Chainring

BOX Cosine Chainring
This item is currently not available.


- CNC-machined 6061-T6 aluminum with rounded tooth profile to reduce chain wear