DURA-ACE HOLLOWTECH II Road Crankset 2x11-speed
FC-R9100
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.
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
- Iconic design
PRODUCT SPECIFICATIONS
| MODEL NO | FC-R9100 |
|---|---|
| SERIES | DURA-ACE R9100 Series |
| Color | Series color |
| Average weight | 614 (50-34T) 624 (52-36T) 626 (53-39T) 642 (54-42T) 650 (55-42T) |
| Rear speeds | 11 |
|---|---|
| Compatible chain | LINKGLIDE, HG 11-speed |
| Chain line (mm) | 43.5 |
| P.C.D. left / right (mm) | 110 |
| P.C.D. (mm) | 110 |
| Spider/gear arms | 4 |
| Chainring combination | 50-34T, 52-36T, 53-39T, 54-42T, 55-42T |
| Q-factor (mm) | 146 |
| 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 | ✔ |
| Optional chain guard|Without chain/bash guard | ✔ |
| HOLLOWTECH II | ✔ |
| HOLLOWTECH crank arm | ✔ |
| HOLLOWGLIDE | ✔ |
| Compatible bottom bracket type|Outboard | ✔ |
| Recommended bottom bracket|Threaded (normal) | BB-R9100 |
| Recommended bottom bracket|Press-Fit | SM-BB92-41B |
| Threaded bottom bracket shell width (mm)|68 | ✔ |
| Threaded bottom bracket shell width (mm)|70 | ✔ |
| Crank fixing screw included | ✔ |
