NEW Pioneer Power Dura-Ace LEFT ARM ONLY-175mm,9100 height_4ft-11in Hub Brand KT Aluminum

Hub Brand KT Aluminum

Helix R is durable and serviceable

and the ability to switch the rear shifter to friction mode

and includes Z-link wire

Shimano Cassette Lock Rings

NEW Pioneer Power Dura-Ace LEFT ARM ONLY-175mm,9100 height_4ft-11in Hub Brand KT AluminumThe 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