- Optimal for external 7 speed modification
- 130bcd 5 bolt, better power transfer for 54/56/58/60T chainring.
- made by AL7075-T6, lightweight and stiff
- 1x spider.
- 9/10/11/12 speed chain compatible
- Optimal for external 7 speed modification
- 130bcd 5 bolt, better power transfer for 54/56/58/60T chainring.
- made by AL7075-T6, lightweight and stiff
- 1x spider.
- 9/10/11/12 speed chain compatible