Quote:
Originally Posted by oneday
It is _part_ of the cage....but is _not_ a cage. The notches (the little black parts at the top of the bend of the main hoop) are built in gussets to attach available halo and down tubes (the forward section to complete the cage).

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That's likely what Toyota would do with their R version. Keep it street legal while being able to add in the rest of the cage for track days.
BTW, not to burst any bubbles (mine included) but just because they're releasing an R version doesn't mean the US market will be included.