Mark
I am reluctant to propose an automatic replacement motor in advance of the need. The need is not a regular occurrence and I think it would be better to address on a case by case basis.
The same thing goes for tires. If original tires become unavailable or just don’t work, then a replacement tire can be specified. To specify options available for what should be a spec class in advance of it being necessary, complicates decisions for the racer.
Russell
Russell