The Z1-R was one of the first bikes to come stock with a fairing.
It was the little steering mounted box that was no more than a styling exercise, but none the less as produced from Kawasaki.
The AMA decided in their infinite wisdom that because it was a fairing, it would not be allowed in production in spite of it's origin.
So we took it off, the bike went faster and handled better.
More wisdom among the riders, caused the AMA to not be invited back to Speedweek.
Both systems have now deteriorated again, proving that ignorance is sometimes bliss.