DURA-ACE - HOLLOWTECH II - Road Crankset - 2x11-speed
The choice of the world's best climbers, sprinters, and time trialists, the DURA-ACE R9100 crank drops weigh while maximizing power transfer. The new design, and its iconic look, is adapted for race specific disc brake systems while still offering a wide range of gearing and crank arm length options.
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
Iconic design
MODEL NO | FC-R9100 |
---|---|
SERIES | DURA-ACE R9100 Series |
Color | Series color |
Average weight | 650 (55-42T) 642 (54-42T) 626 (53-39T) 624 (52-36T) 614 (50-34T) |
Threaded bottom bracket shell width (mm)_70 | ✔ |
---|---|
Chainring combination | 55-42T 54-42T 53-39T 52-36T 50-34T |
Compatible bottom bracket type_Outboard | ✔ |
Crank fixing screw 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 crank arm | ✔ |
Optional chain guard_Without chain/bash guard | ✔ |
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 (mm) | 146 |
Chain line (mm) | 43.5 |
Compatible chain | HG-EV 11-speed, HG-X11 |
P.C.D. left / right (mm) | 110 |
P.C.D. (mm) | 110 |
Rear speeds | 11 |