That is why the Stages unit is the lightest power meter on the market, with a difference of 33-185 g compared to competing powermeters and all of that for the best attractive price. In comparison to a normal crank arm it is only 20g heavier. The Stages power meter measures the transferred power accurately(± 2% deviation) The power meter is very lightweight and small because this unit is mounted in the crank arm. As the powermeterunit can only be installed in aluminium crankarms, the Stages powermeter is not available as original carbon crankarm of SRAM Force or Red. The Stages Rival crankarm also fits other models such as the SRAM Force or Red (GXP 24mm axle). The Stages powermeter is pre-assembled in the non-drive side crank arm, which is mounted as a substitute for your original crank arm. Stages powermeter for the SRAM Rival crankset.
