The SRM PowerMeter / SRAM XX1 1X MTB
is compatible with all SRAM “Direct Mount” MTB Cranks.
The PowerMeter is sold without the cranks!
Thanks to the new PowerMeter design you now have boost and non-boost compatibility in one unit. The rechargeable battery will last you around 100 hours until you can recharge it with the included magnetic USB cable, no battery change necessary!