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System supremacy
Shimanos Dura-Ace 11-speed asymmetric chainrings provide clean chain engagement for reliable riding. The 110 BCD bolt pattern is compatible only with cranks with a matching 110 BCD.
Shimanos Dura-Ace 11-speed asymmetric chainrings provide clean chain engagement for reliable riding. The 110 BCD bolt pattern is compatible only with cranks with a matching 110 BCD.
- System engineering at its peak.
- Redesigned gear teeth profile to fit wider gear pitch
- Optimum power transfer
- Best balance for lighter weight and efficiency
- 4-arm construction
- Shorter length of rear center with O.L.D.135mm
- Hollowtech II