- Shop
- Parts
- Chainrings and Chainwheels
- Chainrings
- Blackspire
- 130
- Single
- 47
- Chain Retaining Single
Blackspire 130 Single 47 Teeth Chain Retaining Single Bicycle Chainrings
Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.
These rings can be used in single ring applications.
These single chain rings have special properties which help retain the chain on the ring.