SHIMANO DURA ACE 曲柄組-FC-R9100

The DURA-ACE groupset is the result of Shimano's ongoing passion for technology. This is reflected in every single component in the groupset. All components are joined together to work as one, reinforcing each other for unparalleled performance. This is how DURA-ACE achieves ultimate supremacy.

Dura Ace FC-R9100 Compact Crankset

The FC-R9100 HOLLOWTECH II crankset's shaping improves upon DURA-ACE's iconic 4-arm design, adding strength and rigidity while minimizing weight. Shimano's Rider Tuned gearing offers a number of chainring configurations with a singular BCD for ease of use and versatility. Through redesigned chainring tooth profiling, the DURA-ACE R9100 crankset is adapted for the latest disc brake frame designs without the need to increase q-factor.

• Enhanced design saves 7 g while maintaining rigidity
• Iconic 4-arm construction
• Optimized crank arm design strengthens key stress zones
• New chainring tooth profile is adapted for race bike specific disc brake systems
• Accommodates shorter chainstays (410 mm) with 135 mm OLD
• HOLLOWGLIDE chainring construction