"**Unfortunately none of the SRAM road BB30 left crank arms work with our power meter. The carbon crank arms will not work and the other alloy BB30 option is the S300, which is hollowed out on the inside of the arm and so we can’t attach there.
We will be offering an FSA Energy option in BB30 very soon, but this would require a whole new crankset for you.
The only other possible solution would be if you returned it for a complete Rival crankset and used a bottom bracket adapter**."
prompt reply from Stages:
"**Unfortunately none of the SRAM road BB30 left crank arms work with our power meter. The carbon crank arms will not work and the other alloy BB30 option is the S300, which is hollowed out on the inside of the arm and so we can’t attach there.
We will be offering an FSA Energy option in BB30 very soon, but this would require a whole new crankset for you.
The only other possible solution would be if you returned it for a complete Rival crankset and used a bottom bracket adapter**."