GZYF Black Front Left & Right Brake Disc Rotors For KAWASAKI NINJA 2004-2007 ZX10R/2005-2012 ZX6R 100% brand new; a perfect replacement for original rear disc. Anti-rattle pressure spring system. Heat-treated material.Increase brake performance for both street and track. Please make sure it will fit your bike before your purchase. The compatibility model and year is showed in the product description. Fitment:ZX-6RR&nbsp;&nbsp;2005-2006;ZX-6R 636&nbsp;&nbsp;2005-2011;ER-6F/NINJA 650R&nbsp;&nbsp;2006-2008;more models might fit, please check the production description.