1. 420 stainless steel and 6061 T6 aluminum material ensure long-lasting stopping power, HRC 36+-2 heat treatment harness ensures the brake area will not warped. 2. The construction offers great heat dissipation and allows air to circulate through disc to maximize cooling efficiency. 3. Slotted design improves rotor cooling for better heat dissipation and water dispersion, the slotted rotor ensures water and dirt are dispersed quickly when braking. 4. Optimum shaped lightening hole, to provide weight savings, combined wih improved uniform disc cooling and brake pad cleaning effect. 5.Warranty: We provide 6 months warranty, if you have any quality problems with our product, please give us feedback in time. We will have a professional after-sales service team to solve for you. Note: 1.Please check out the size & product fits your bike or not before you purchase. 2.If you have any problems after receiving our products, please contact us immediately before leaving feedback or making a complaint; we hope that with good communication we can bring you a better solution Condition: New, never mounted Material: Stainless steel 420(2Cr13) Color option: silver with black or silver with gold Front exterior diameter: 310mm/12.2inch Inner diameter: 80mm/3.14inch Wear limit: 4.5mm/0.17inch Thickness: 5mm/0.19inch Center point distance of screw hole: 60mm/2.36inch Screw hole diameter: 10mm/0.39inch for Kawasaki ZX6R NINJA 636 2013-2021 for Kawasaki ZX6R NINJA 636 ABS 2013-2021 for Kawasaki Z800 2013-2016 for Kawasaki Z800 ABS 2013-2016 for Kawasaki Z1000 2014-2020 for Kawasaki Z1000 ABS 2014-2021 for Kawasaki ZX-10R NINJA 2008-2015 for Kawasaki ZX-10R NINJA ABS 2011-2015 for Kawasaki ZZR1400 2006-2007 for Kawasaki ZZR1400 ABS 2006-2021 for Kawasaki NINJA ZX-14R 2006-2017 for Kawasaki NINJA ZX-14R ABS 2013-2017 Package included: 2 pcs front brake disc