The stages power meter g2 dura ace 9000 crank is the industryrsquos only crank mounted power meter thatrsquos compatible with the new fc 9000 crankset the dura ace 9000 is pre assembled on a dura ace 9000 left crankarm it replaces the existing left crankarm which makes installation pretty simple due to the left crankarm interface there is no interference with the drivetrain components this power meter weighs just 20g plus the crank arm weight making it the lig