Shimano Duraace FC-9100 Crankset without BB

FEATURES

• Optimum power transfer
• Best balance for lighter weight (-7g) and efficiency
• New designed crank arm
• Maintains high rigidity and reduces weight
• HOLLOWGLIDE
• 4-arm construction crankset
• Adapted for race specific disc brake system
• Shorter length of rear center with O.L.D.135mm
• Redesign the gear teeth profile to fit wider gear pitch
• Rider tuned gearing options
• 50-34T/53-39T/54-42T/55-42T/52-36T
• Iconic design
• Crank arm length: 165, 167.5, 170, 172.5, 175, 177.5, 180mm
• Gear combination: 50-34T, 52-36T, 53-39T, 54-42T, 55-42T

• Series : DURA-ACE
• Crank Construction : HOLLOWTECH II technology
• Crank Arm Length : 165, 167.5, 170, 172.5, 175, 177.5, 180mm
• Bottom Bracket : BB-R9100, SM-BB92-41B
• Chain Line : 43.5 mm
• Average Weight : 621g (53-39T)