Description
SHIMANO ULTEGRA – HOLLOWTECH II – Road Crankset – 2×11-speed
The all-new SHIMANO ULTEGRA R8000 series crank features lightweight crankarms, a hollow outer chainring, and a wider gear pitch for increased clearance on modern road frames. It is available with 53-39, 52-36, 50-34, and 46-36T chainrings and 165, 170, 172.5, and 175mm crank arm lengths.
FEATURES
- Lightweight crankarm design optimized for power-transfer efficiency Minimal weight without sacrificing stiffness HOLLOWTECH II
- Rider-tuned gear performance through various gear combinations
- Redesigned FC for greater frame compatibility Wider gear pitch increases clearance between chain and leading teeth, providing compatibility with frames of O.L.D. 135 mm and 410 mm chain stay length
SPECIFICATIONS:
| MODEL NO | FC-R8000 |
| SERIES | ULTEGRA R8000 Series |
| Color | Series color |
| Average weight | 668 (46-36T) 674 (50-34T) 681 (52-36T) 690 (53-39T) |
| 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 | 46-36T, 50-34T, 52-36T, 53-39T |
| Q-factor (mm) | 146 |
| Crank arm length (mm)|165 | ✔ |
| Crank arm length (mm)|170 | ✔ |
| Crank arm length (mm)|172.5 | ✔ |
| Crank arm length (mm)|175 | ✔ |
| Optional chain guard|Without chain/bash guard | ✔ |
| HOLLOWTECH II | ✔ |
| HOLLOWTECH crank arm | ✔ |
| HOLLOWGLIDE | X, – (46-36T) |
| Compatible bottom bracket type|Outboard | ✔ |
| Recommended bottom bracket|Threaded (normal) | SM-BBR60 |
| Recommended bottom bracket|Press-Fit | SM-BB72-41B |
| Threaded bottom bracket shell width (mm)|68 | ✔ |
| Threaded bottom bracket shell width (mm)|70 | ✔ |
| Crank fixing screw included | ✔ |
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