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.
[tab name ="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 | ✔ |