SRM has taken power measurement to the next level with its SRM PM9 Origin Road Carbon Power Meter. Like all SRM power meters, the Origin features SRM s 144 point calibration protocol, resulting in unmatched accuracy and consistency. The PM9 version also features Left/Right Power Balance, Magnet-less cadence, Automatic temperature compensation, and Bluetooth SMART, among other new features. The Origin also offers near limitless compatibility with exchangeable spindle sizes, crank arms, and chainrings - to fit any bike or ride preference.