Description
SHIMANO Ultegra crank 2-speed FC-R8100
The Ultegra FC-R8100 crank not only converts your pedal force into propulsion, with its high rigidity it also ensures extremely fast and precise switching behavior. The high switching precision is supported by the optimized chainring design. In order to keep the weight low, the Japanese continue to rely on the proven 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 from 160 to 175 millimeters.
Technical specifications:
intended use : racing bike
Material crank arms: aluminum
Material spider: aluminum
Material crankshaft: steel
Crankshaft diameter: 24 mm
Crank lengths: 160; 165; 170; 172.5 or 175 mm
bolt circle diameter diameter: 110 mm
Spider: 4-arm, asymmetrical
Chainring gradation: 50-34 or 52-36 teeth
Chainring Bolts: Aluminum
chain line : 44.5 mm
Q factor: 148 mm
Compatibility bottom bracket: BSA, ITA, BB30, BB92 etc. (optional, not included)
Compatibility chains: Shimano CN-M9100 12-speed , CN-M8100 12-speed
Driver weight: n / a
Finish: matte
Color gray
Weight according to the manufacturer: 700g (50-34 teeth), 711g (52-36 teeth)
Weight weighed: 711g (50-34 teeth; 172.5mm)
Scope of delivery: 1x crankset Ultegra FC-R8100 including chainrings without bottom bracket
