These beautifully machined Cross-Drilled and Slotted Brake Rotors give you incredible stopping power. The cross-drilled holes are chamfered to eliminate cracking and move air away from the disc surface while reducing surface temperature, eliminating hot spots and warping. Cross-drilled brake discs are machine-balanced, with a double disc ground surface. The cross-drilled and slotted brake rotors are sold in left or right (also available as an upgrade on Wide-5 Disc Brake Kits) and come zinc coated to help prevent rusting and give you a performance race look. These will help keep brake temps down, reduce brake fade and improve braking in wet conditions.