105 12-speed crankset
Shimano 105 FC-R7100 Crankset
The 12-speed 105 crankset shares its shape and standards with Ultegra and Dura-Ace, using hollow forged arms for a stiff, durable crank at a club-rider price. It suits both 105 Di2 and mechanical 105 builds.
Highlights
Why we rate it
Hollowtech II construction
Hollow forged aluminium arms on a 24mm axle give a stiff, light crank that feels close to the higher-tier versions.
Works with Di2 and mechanical
The same crank is used across 105 Di2 R7100 and the 2024-on mechanical 105 groupset.
Two sensible ratios
50-34T suits sportives and hilly riding, while 52-36T gives a little more top end for faster group riding.
Lengths from 160mm
Five arm lengths from 160mm to 175mm make it easy to fit smaller and larger riders alike.
Common standards
110mm asymmetric BCD and Hollowtech II bottom brackets keep spares and upgrades simple.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- FC-R7100
- Series
- 105 R7100 (Di2 and mechanical)
- Speeds
- 2x12
- Chainrings
- 50-34T, 52-36T
- Crank lengths
- 160, 165, 170, 172.5, 175mm
- BCD
- 110mm asymmetric 4-arm
- Q-factor
- 148mm
- Chainline
- 44.5mm
- Axle
- 24mm Hollowtech II
- Weight
- Approx. 754g (50-34T)
- Bottom bracket
- Hollowtech II, e.g. BB-RS501 threaded or BB-RS500-PB press-fit (sold separately)
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.