Shimano DURA ACE FC-R9100-P CranksetSeries DURA ACE Model no. FC R9100 P Chainring combination 50 34T, 52 36T, 53 39T, w o chainrings Crank arm length (mm) 160 165 * 167. 5 * 170 172. 5 175 177. 5 * 180 * Force measurement Right side Left side Number of strain sensor 24 Cadence measurement Magnet Accelerometer Accuracy (%) 2 LED for system status Number of control button 1 Zero offset By control button By device Active temperature compensation Battery Type Lithium ion Coin cell Life 300

Optional Style: 27 Speed

As cadence and speed decrease and torque increases

hardware: titanium

is lightweight and compact and compatible with Sclaverand valves

Pad Standard 1: B05S-RX Resin (w/o fin)

8 mm (Q factor 162 mm)

the Down Swing front derailleur also performs shifting operations 4 5% faster than the predecessor model FD-R9150

Gear rear: 10-speed

2-way release trigger for thumb or finger actuation

reinforcing cage

Even during maximal efforts up a climb or racing a friend

Compatible with 11-speed chains (DYNA SYS 11)