Shimano Ultegra FC-R8100 Front Crankset 50-34

Shimano FC-R8100 Front Crankset Ultegra 50-34T 170mm 12-Speed

Ultegra’s FC-R8100 crank maintains the same quick, precise front shifting and efficient power transfer that Shimano riders have grown accustomed to, but with even more crank arm length options.

An integral part of Shimano’s new 12-speed road lineup, the FC-R8100 crank builds upon Shimano’s legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the Ultegra crank is now offered in lengths from 160 to 175 mm, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanical requirements.

FEATURES

• Optimal balance of stiffness, strength, weight and rotational performance
• HollowGlide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting

PRODUCT SPECIFICATIONS

Model No: FC-R8100
Series: Ultegra R8100 Series
Colour: Series colour
Average weight: 700 grams (50-34T)
Rear speeds: 12
Compatible chain: HG 12-speed
Chain line (mm): 44.5
P.C.D. (mm): 110
Spider/gear arms: 4
Chainring combination: 50-34T
Q-factor (mm): 148
Crank arm length (mm)|170: Yes
Optional chain guard|Without chain/bash guard: Yes
HollowTech II: Yes
HollowTech crank arm: Yes
HollowTech: Yes
Compatible bottom bracket type|Outboard: Yes
Recommended bottom bracket|Threaded (normal): SM-BBR60
Recommended bottom bracket|Press-Fit: SM-BB72-41B
Threaded bottom bracket shell width (mm)|68: Yes
Threaded bottom bracket shell width (mm)|70: Yes
Crank fixing screw included: Yes