BOX Components

BOX, Cosine 7075 4 bolt Chain Rings

  • Sale
  • $ 63.95


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 finish.

  • BCD: 104mm
  • 41 tooth: 84 grams / 2.9 ounces
  • 42 tooth: 87 grams / 3.1 ounces
  • 43 tooth: 90 grams / 3.2 ounces
  • 44 tooth: 92 grams / 3.2 ounces
  • Made in the USA