There is a power meter that fits your needs. Electronics and battery are integrated inside the axle. Superlight crank with hollow drilled arms with black anodized CNC-machined finish. Integrated 30mm aluminium axle and 110/60mm BCD.
The REX 2 crank closes the gap between Rotor's REX 3 and the performance-orientated REX 1 crank. Featuring trinity drilled, cold forged crank arms and 30mm UBB aluminium axle. XC2 version with 110/60mm BCD.