Hi Dean,
Thanks. This is the only thing I could find that looks like might do the job. Let me know what you think?
Unfortunately I cannot add links or screenshots but I found this from Garmin:
- T1709 E-Thru adapter X-12 (>142 mm) - suitable for hubs with axle skewer 142 × 12 mm.
And bike’s rear hub is:
Vitus KT
M4ZR, 142mm x 12mm Thru-Axle, Shimano 10spd Freehub, 6-bolt