I have a pair of Kawasaki brake discs i bought of Ebay last year as spares for my ZX9 C2- turns out they arent for my bike 
They are 320mm and fit onto a kawasaki wheel fine- ( wasnt till i tried to put calliper on i found they are bigger! so caliper wont go on!!)
They are either off a ZX6 or a ZX7 or will fit a ZX9 or streetfighter etc if you use a modified calliper bracket.
Cost me £100
Take £50 
07973 361 713
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