Shimano warrants to the original retail purchaser that the Shimano bicycle division product for which they received this warranty, is free from non-conformities in material and workmanship for a period of two years and their Dura-Ace and XTR components are covered for a period of three years from the date of original retail purchase. Shimano footwear, soft goods and wheels are warranted for a period of one year.

• Optimum power transfer
• The best balance for the lighter weight (-7g) and efficiency
• Newly designed crank arm
• Maintains high rigidity and reduces weight
• HOLLOWGLIDE
• 4-arm construction crankset
• Adapted for race-specific disc brake system
• A shorter length of rear center with O.L.D.135mm
• Redesign the gear teeth profile to fit wider gear pitch
• Rider tuned gearing options
• Iconic design
• MODEL NO: FC-R9100
• DURA-ACE R9100 Series
• Series color
• Average weight: 650g (55-42T), 642g (54-42T), 626g (53-39T), 624g (52-36T), 614g (50-34T)
• HOLLOWTECH II Technology
• Threaded bottom bracket shell width (mm)_70
• Chain line: 43.5mm
• Chainring combination: 55-42T 54-42T 53-39T 52-36T 50-34T
• Compatible bottom bracket type_Outboard
• Compatible chain: HG-EV 11-speed, HG-X11
• Crank fixing bolt included
• Crank arm length (mm)_165
• Crank arm length (mm)_167.5
• Crank arm length (mm)_170
• Crank arm length (mm)_172.5
• Crank arm length (mm)_175
• Crank arm length (mm)_177.5
• Crank arm length (mm)_180
• Spider/Gear arms: 4
• HOLLOWGLIDE
• HOLLOWTECH II
• HOLLOWTECH Technology
• HOLLOWTECH crank arm
• Optional chain guard_Without chain/bash guard
• P.C.D.: 110mm
• Rear speeds: 11
• Recommended bottom bracket_Press-fit: SM-BB92-41B
• Recommended bottom bracket_Threaded (normal): BB-R9100
• Technology: HOLLOWTECH BB | HOLLOWTECH II
• Threaded bottom bracket shell width (mm)_68
• Q-factor: 146mm
• Chain line: 43.5mm
• Compatible chain: HG-EV 11-speed, HG-X11
• P.C.D. left / right: 110mm
• P.C.D.: 110mm
• Rear speeds: 11

Must be installed and serviced by qualified bicycle mechanic