4iiii Precision Power Meter Shimano Ultegra R6800 Left Crank Arm - 172.5mm model-clx30 5mm 11 Speed 32T Cinch

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4iiii Precision Power Meter Shimano Ultegra R6800 Left Crank Arm - 172.5mm model-clx30 5mm 11 Speed 32T CinchUsed to pace attacks up the Alpe DHuez in the Tour de France and to hammer on the Queen K during the Ironman World Championships, the PRECISION Powermeter delivers industry leading accuracy and reliability when you need it most. Through our patented 3D Strain Gauge technology, you can be assured that the data you depend on will help lead you to your own Yellow Jersey. Packaged into a durable lightweight design and compatible with ANT+ and Bluetooth