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SHIMANO ULTEGRA R8100 FC-R8100 HOLLOWTECH II Crankset 2x12-speed 52/36T 170MM 172.5MM

Description

FC-R8100
ULTEGRA's new 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. Spanning 160 to 175 mm in length, ULTEGRA cranks now cater to smaller riders, triathletes, and cyclists curious about shorter crank arms.

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
~52-36, 50-34, and 46-36 chainring options. 160, 165, 170, 172.5, and 175 mm crank arm lengths.

PRODUCT SPECIFICATIONS
MODEL NO    FC-R8100
SERIES    ULTEGRA R8100 Series
Color    Series color | Series color
Average weight    700 (50-34T) 711 (52-36T)
Rear speeds    12 - 12
Compatible chain    HG 12-speed
Chain line (mm)    44.5 - 44.5
P.C.D. (mm)    110 - 110
Spider/gear arms    4
Chainring combination    46-36T (NEW), 50-34T, 52-36T | 46-36T, 50-34T, 52-36T
Q-factor (mm)    148

Crank arm length (mm)|160    âœ”
Crank arm length (mm)|165    âœ”
Crank arm length (mm)|170    âœ”
Crank arm length (mm)|172.5    âœ”
Crank arm length (mm)|175    âœ”

Optional chain guard|Without chain/bash guard    âœ”
HOLLOWTECH II    âœ”
HOLLOWTECH crank arm    âœ”
HOLLOWGLIDE    âœ”
Compatible bottom bracket type|Outboard    âœ”
Recommended bottom bracket|Threaded (normal)    SM-BBR60 | SM-BBR60
Recommended bottom bracket|Press-Fit    SM-BB72-41B | SM-BB72-41B
Threaded bottom bracket shell width (mm)|68    âœ”
Threaded bottom bracket shell width (mm)|70    âœ”
Crank fixing screw included    âœ”

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