Used bike: Kawasaki ZX6R Review, intriguing 636cc 2005-2006
Kawasaki Ninja ZX-6R (2005 – 2006) - Buyers Guide
Buying 2006 Ninja 636 for $3500 (37k mileage) It runs great. I've been riding a 250 and been getting into tricks, I figure this is a good 2 year bike? : r/Kawasaki