- Optimized for new drive system
- 10-45T (1x12-speed)
- 10-45T (2x12-speed)
- Decreased rear derailleur tension at low gear position, to prevent high chain tension at low gear
- Add bumper at rear derailleur pulley cage
- Bigger 13T pulley
- Enhance shifting performance
- Silent drivetrain
- Low profile design
- Low sprocket combination