Jep made track with diameters of (just under) 24, 32 and 48 Inches (60, 80 and 120 cm). There is no mention of compatibility so I assume all locomotives could run on all these curves. Anyway, their largest diameter is 48 Inches which is smaller than O54, so you are good. I run it at O72 (when not in the garden):
Regards
Fred