Whats the deal with 250cc grey imports? If it fits the bill of a prohibited bike would it be banned or are they still legal seeing as all 250cc's are learner legal bar the 5 or 6 they've listed?
EDIT: I know with the prohibited vehicles list, even if a car isn't explicitly named on the list (ie 1992 HR32 Skyline GTR), its still banned if it has a turbo or 8 or more cylinders.
I don't get the question?
All grey imports have to go through all the hectic compliancing. If it's one of the banned one's on the list, it's not legal. If it's not on the list, you can ride it.
I think what you're getting at is, if you imported a bike, that wasn't on the list, but was 250cc and had a hectic power-to-weight ratio, would it be learner legal?
The answer is yes, probably, unless the RTA took notice and decided to ban it. The RTA's method of determining what bikes to ban wasn't exactly rigorous. They banned the most numerous 250cc 2-stroke sports bikes, but a few bikes with equal power-to-weight ratio's got through.
They don't test these things in general. There would have to be a spate of accidents on some new high-powered 250cc, or someone would have to lobby the RTA to have it added in general.
It's the same with bikes 250cc> * <660cc, with less than 150kw/tonne, the manufacturer, importer or owner has to petition the RTA before it gets added, they don't automatically add things based on power-to-weight data.
For example, there are a few TDR250's in this country, all grey imports. They're a hectic 250cc 2-stroke supermotard, using the full gas version of the banned TZR250 motor. They're definetly learner legal at present, even though they would exceed 150kw/tonne, mono and accelerate in an exciting fashion.
There aren't many exceptions, due to the difficulty of importing bikes.