NEW Pioneer Power Dura-Ace LEFT ARM ONLY-175mm,9100 Type_Shorts For use with clamp-on front

For use with clamp-on front derailleurs

Fits Brand: SE Racing

Electroplated chromoly spindle

Kit included 2 ratchets

NEW Pioneer Power Dura-Ace LEFT ARM ONLY-175mm,9100 Type_Shorts For use with clamp-on 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