Shimano ULTEGRA R8100 Crankset 2x12s Road Bicycle 165mm 170mm 172.5mm 50-34T 52-36T Hollow Integrated Speed Crank For Road Bike

NOTE:please choose with original shimano box or not!

Shimano ULTEGRA R8100 Crankset 2x12s Road Bicycle 165mm 170mm 172.5mm 175mm 50-34T 52-36T Hollow Integrated Speed Crank For Road Bike

Model FC-R8100

Series ULTEGRA R8100 Series

Color Series Color

Average weight 700 (50-34T) 711 (52-36T)

Width of threaded five way (mm)_ seventy ✔

Chain wheel blade combination 50-34T 52-36T

Compatible center axle types_ On the outside ✔

Including crank fixing screws ✔

Crank arm length (mm)_ one hundred and sixty ✔

Crank arm length (mm)_ one hundred and sixty-five ✔

Crank arm length (mm)_ one hundred and seventy ✔

Crank arm length (mm)_ one hundred and seventy-two point five ✔

Crank arm length (mm)_ one hundred and seventy-five ✔

Blade holding arm/crank claw 4

HOLLOWGLIDE ✔

HOLLOWTECH II ✔

HOLLOWTECH crank arm ✔

Optional chain guard_ No chain/impact protection chain disk ✔

Recommended center axle_ Press in SM-BB72-41B

Recommended center axle_ Thread (normal) SM-BBR60

Width of threaded five way (mm)_ sixty-eight ✔

Q factor (mm) 148

Chain center line (mm) 44.5

Compatible chain HG 12 speed

P.C.D. （mm） 110

Rear speed change 12