There are several power meters that will work, depending on which Race Face MTB crankset you have:
Spider Power Meters
power2max NGeco Race Face MTB Power Meter
The power2max NGeco Race Face MTB Power Meter is one of our our go to power meter for Race Face cranksets. It will fit all Race Face direct mount cranksets (regardless of spindle size), including Era, Next SL, Next R, Turbine, Atlas and Aeffect. It’s a superb power meter in that it’s accurate, extremely durable, measures the power from both legs, is reasonably priced and allows you to keep your current Race Face crankset.
Please note, the power2max uses a 104 BCD chainring configuration. So you will need a power2max compatible MTB chainring as well.

power2max NGeco Race Face MTB Power Meter
Sigeyi AXO Race Face MTB Power Meter
The Sigeyi AXO Race Face MTB Power Meter is another great option for Race Face cranksets. Like the power2max, it will fit all Race Face direct mount cranksets. It also measures power from both legs and is accurate and readable. However, it is more affordable than the power2max while not sacrificing any features or functionality.

Sigeyi AXO Race Face MTB Power Meter
Pros: Moderately priced, VERY reliable, don’t have to change crankset, measures both legs
Cons: None
Power Meter Pedals
MTB power meter pedals are also an option as they can easily be installed on any MTB crankset. We have the Garmin Rally XC, SRM X-Power and SRM X-Power Flat Pedals.
Pros: Easy to install, works on any bike, can move from bike to bike, don’t have to change crankset
Cons: Some versions are pricey
WhichSigeyi AXO Race Face PM is needed for the fat bike crank to work on a 197 rear spaced hub (Specialized Fatboy) for correct chain line (boost or non-boost)? Thanks in advance!
Hi and thanks for the great question,
Fat Bikes can be a complicated nut to crack as chainline and chainring clearance can be a fine line. Each case is very different. Please contact us through our Support channels and we’ll work on your application individually.
Thanks,