Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 38T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 39T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 40T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 41T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 42T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 43T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 44T 6061AL 11749 Black 1sp Standard
Made in the USA from 6061-T6 aluminum alloy, Cosine 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 45-teeth 104mm 4-bolt 45T 6061AL 11749 Black 1sp Standard