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It's not required to hone Nikasil bores, infact due to the thickness of Nikasil (or equivilent) applied, it should generally be avoided. Most Two strokes use Nikasil bores & they get new pistons & rings on a fairly regular schedule, no honing required unless the bore is damaged, & if it is then it usually needs an oversize and replating.
Honing is an OLD technique designed for use on OLD tech cast iron liners like those in the pregen & newgen 250's. I've rebuilt loads of 4 stroke bike engines in the past with new pistons & rings without honing if the bore was in good condition. Just be gentle with the initial break in runs. Never burned any oil or lost compression, nor damaged any rings that way.
YMMV
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