Bottom bracket and drivetrain component engineered for smooth, reliable performance, featuring a 118 mm axle, 68 mm frame width, an Octalink axle interface and BSA threading.
- Smooth and precise shifting performance with HYPERDRIVE technology
- Quiet shifting that reduces riding noise (48T)
- Compatible with a chain guard
- Available in 44-32-22T / 48-36-26T specifications
- ALIVIO logo (T4060), SHIMANO logo (T4010)
- Improved sealing properties (SM-BB52)

