The 'Universal Mount', from Badass ebikes, is an adapter plate that can be positioned as desired on the swing-arm using cable-ties. The adapter-plate incorporates a cut-out section to enable the sensor to be attached using a M5 sized nut.

The Universal Mount can first be attached to the swing-arm using cable-ties once the M5 nut has been inserted into the cut-out section. Please note that an additional spoke magnet is often required.