NEW Pioneer Power Dura-Ace LEFT ARM ONLY-175mm,9100 Type_Shorts Not for use with front

Not for use with front derailleur drive trains

Fits Brand: SE Racing

Chainring BCD: 112 Campagnolo Asymmetric

Molded-in 90deg stop

NEW Pioneer Power Dura-Ace LEFT ARM ONLY-175mm,9100 Type_Shorts Not for use with frontThe SBT LT91 series of Power Meter Crank arms provide precision single leg power meter measurements for Shimano Dura Ace R9100 crankset owners. Pioneer Power Meter sensor is factory pre installed and precision calibrated on Shimanos Dura Ace R9100 crank arm. Four directional strain gauges and dual accelerometers per arm work together to precisely measure pedaling force, as well as Pioneers proprietary force direction and pedaling efficiency