South Salem Cycleworks: Salem, Oregon
email: nate@sscycleworks.com
We have a huge stock of vintage and modern parts. Contact us!


Hi, Nate Taylor here. Please reach out to me at nate@sscycleworks.com for inquiries on parts availabilities and shipping estimates.

94mm Bolt Circle Diameter, 4-bolt chainrings

94 Bolt Circle Diameter (BCD) 4-bolt chainrings on this page:
IRD: 32-tooth

Bolt Circle Diameter is the diameter of the circle formed by the centers of the chainring fixing bolts. With 4-bolt cranksets, this is easy to measure. 5-bolt cranks are more difficult.

If you are unsure about what size chainring you need, Wolf Tooth Components has an excellent guide to measuring your rings.


IRD 32-tooth 94 BCD 4-bolt chainring. New, $30.00

Part# 62023

  • 10/11-speed
  • 7075 Aluminum alloy
  • We have four in stock

IRD Chainring

IRD was kind enough to print the important specs on the ring.

IRD chainring

The flip side