The SHIMANO ULTEGRA FC-08 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.

Specifications
Lengths: 165 mm, 167.5 mm, 170 mm, 172.5 mm, 175 mm
Combinations: 50-34T, 52-36T, 53-39T, 46-36T
Chainline: 43.5mm
Q-Factor: 146mm
Hollowtech II spindle
FC-08 (FC-6800/R8000)

Mfr Claimed Weight
TBC