Hole 1=stock, hole 2=1.25"(32mm), hole 3=2.5"(64mm) 00-01 Kawasaki ZX-12R Ninja 98-04 Kawasaki ZX-6R Ninja 98-04 Kawasaki ZX-6RR Ninja 00-01 Kawasaki ZX-9R Ninja 05-08 Kawasaki ZZR600