DURA-ACE Crankset increases efficiency and versatility
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 7g 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 (410mm) with 135mm OLD
• HOLLOWGLIDE chainring construction
• Crank arm lengths: 165, 167.5, 170, 172.5, 175, 177.5, 180mm
• Rider Tuned gear combinations (2x11): 50-34T, 52-36T, 53-39T, 54-42T, 55-42T
• Weight: 609g (50-34T), 621g (53-39T)