SRAM's Red road chainrings are stamped from 7075 aluminum for low weight and excellent strength. The teeth are ramped and pinned for precision shifting, too.
| Option | Barcode | Manufacturer's Part Number | Vendor Number |
|---|---|---|---|
| 50T | 00710845665820 | 11.6215.198.010 | QBP-CK5820 |
| 52T | 00710845674693 | 11.6215.198.050 | QBP-CK5821 |