Made in the US from 6061-T6 aluminum alloy, Box Two Chainrings are round and true. They fit 104 BCD four-bolt cranks and are available in black anodized with laser-etched graphics from 38 to ...
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Made in the US from 7075 aluminum alloy, Cosine Chainrings are round and true. They fit 104-BCD four-bolt cranks. The 7075 rings come in sizes of 41 to 44-teeth only and have a durable hard anodized ...
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