Cranks SHIMANO ULTEGRA FC-R8100 - 2x12 speeds - 50/34z - 170mm

The new ULTEGRA FC-R8100 crankset retains the same fast, precise front shifting and efficient power transfer that Shimano riders have come to expect, but with even more crank length options.
The ULTEGRA cranks with 160 to 175mm crank lengths are now designed for smaller riders, triathletes and cyclists interested in shorter crank arms.
An integral part of Shimano's new 12-speed road series, the FC-R8100 crankset builds on Shimano's legendary front derailleur shifting and gearing efficiency.
With new enhancements for smooth 12-speed shifting, ULTEGRA cranks are now offered in lengths from 160 to 175mm, delivering performance and a better fit for smaller riders, triathletes and riders with specific requirements.

Optimal balance between stiffness, strength, weight and rotational performance
HOLLOWGLIDE structure reduces weight while retaining strength for better power transfer and faster, more precise shifting
Gearbox options 52-36 and 50-34.
Crank lengths 160, 165, 170, 172.5 and 175 mm.


Model FC-R8100
ULTEGRA R8100 Series
Weight (g) 700 (50-34T) 711 (52-36T)
Transducer Combination 50-34T 52-36T
Crank length 170mm
Gearbox mounting on 4 arms
HOLLOWTECH II
Recommended Press-fit centre SM-BB72-41B
Recommended centre BSA SM-BBR60
For 68-70mm axle
Q-factor (mm) 148
Chainline (mm) 44.5
Compatible chain LINKGLIDE, HG 12-speed
Front speed 2
Rear speed 12