SHIMANO Ultegra Crank 2-speed FC-R8100 52 | 36 Teeth 170mm 12spd

c To keep the weight low, the Japanese continue to use the tried and tested Hollowtech II construction of the crank arms. The crank is available with a gear ratio of 52-36 teeth and 50-34 teeth and with crank arm lengths of 160 to 175 millimeters. 


Technical data:
Area of ​​use: Road bike Crank
arm material: Aluminum
Spider material: Aluminum
Crankshaft material: Steel
Crankshaft diameter: 24 mm
Crank lengths: 160; 165; 170; 172.5 or 175 mm
Bolt circle diameter: 110 mm
Spider: 4-arm, asymmetrical
Chainring gradation: 50-34 or 52-36 teeth
Chainring screws: aluminum
Chain line: 44.5 mm
Q-factor: 148 mm
Bottom bracket compatibility: BSA, ITA, BB30, BB92 and others (optional, not included)
Chain compatibility: Shimano CN-M9100 12-speed, CN-M8100 12-speed
Rider weight: n/a
Finish: matt
Color: gray

Weight: 700g (50-34 teeth), 711g (52-36 teeth)