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whats the big tube that comes from under the seat into the swingarm in the first pic?
Seems to be a strut to make the rear a hardtail, but I can't figure out why it goes all the way through the swing arm.
My first guess was that for some reason they were using it as the NOS tank, but I didn't see any fittings.
![](http://www.ducatibunbury.com.au/999TwinTurbo/051409twinturbo/051409twinturbo18.jpg)