Description
Made in the USA from 6061-T6 aluminium alloy, Cosine chainrings are round and true. They fit 104 BCD four-bolt cranks. Available in black anodised with laser-etched graphics in 38-45-tooth sizes.
- 38T: 73 grams/2.25 ounces
- 39T: 78 grams/2.75 ounces
- 40T: 79 grams/2.8 ounces
- 41T: 84 grams/2.9 ounces
- 42T: 87 grams/3.1 ounces
- 43T: 90 grams/3.17 ounces
- 44T: 92 grams/3.2 ounces
- 45T: 96 grams/3.36 ounces
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