Front Rear Brake Disc for Suzuki GSX 1400 2001-2008Front brake disc 420 (2Cr13) stainless steel outside rotor, wear resistant with good heat dissipation, 6061 aluminum inside rotor, light weight with bright oxidation color. CNC milled and anodized in black or gold color. Heat treated to prevent warping. The vented slots ensure water and dirt are dispersed quickly when braking with good heat dissipation. Drilled rotor speeds up air circulation for superior heat dissipation and better stopping power.