https://www.zinn.bike/jk-e-bike-cranks.html?id=88684448
Zinn Cycles: Joseph Kuosac mountain bike cranks
The Joseph Kuosac or JK e-bike cranks are designed for e-bikes with ISIS drive spindles on either side of the motor. Bosch and Brose motors both use this system
zinn cyclesjoseph kuosacmountain bikecranks