Answer: Yes, we have versions of our Helix Race Alloy E*spec Cranks and Helix Core E*spec Cranks that are designed for the ISIS standard and are compatible. Both the 21.5mm and 26.5mm ISIS "Bosch" models will work on Avinox motors which uses version of the ISIS standard.

Note: The ISIS standard as originally developed and applied by other manufactures incorporate a "crank stop" that limits how far the crank can be pressed onto the spindle. The design that Avinox uses does not have a crank stop. The lack of a crank stop can result in variance of how far the crank will press onto the spindle depending on install torque being used. Additionally, with repeated removal/reinstallation without a crank stop, the distance the crank installs on the spindle may increase over time, even if the same torque is used during each installation. See the diagram below that shows systems both with and without the cranks stop.

Because there is no defined stop, this could mean that the dust wiper found on Helix e*spec cranks needs to be removed even when using e*thirteen Helix rings if the crank preloads deeper on the spindle than it would on an ISIS spindle which incorporates a crank stop.