SRAM's road chainrings are stamped from 7075 aluminum for low weight and excellent strength. The teeth are ramped for precision shifting, too.
| Option | Barcode | Manufacturer's Part Number | Vendor Number |
|---|---|---|---|
| 38T | 00710845674815 | 116215197140 | QBP-CK5810 |
| 39T | 00710845665875 | 116215197010 | QBP-CK5811 |