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BOX Cosine Chainring

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

Part Numbers

Option UPC MPN Store SKU
Black / 38t 639266089834 BX-CR144B38T-BK
Black / 40t 639266089858 BX-CR144B40T-BK CHA30891555K
Black / 42t 639266089872 BX-CR144B42T-BK