Rear Brake Disc for Honda CBR600F 1987-1990Fit for Honda CBR600F 1987 1990. 420 stailless steel. Hi end laser cut technology for perfection and accuracy. Slotted design improves rotor cooling for better heat dissipation and water dispersion to keep your brake system clean and run cooler. Surfaces are electro statically coated to ensure a long term appearance. Durable works with all types of brake pads. 2 types available. Includes 1pc brake disc. We marked the Min Thickness on the surface ,it