How do you replace pre bent brake lines?

To replace pre-bent brake lines, first, safely lift the vehicle and remove the wheel to access the brake lines. Disconnect the old lines by loosening the fittings with a wrench, ensuring to catch any brake fluid that may leak. Then, align the new pre-bent brake lines with the existing mounting points and connect them securely, tightening the fittings. Finally, bleed the brake system to eliminate any air bubbles and check for leaks before reassembling the wheel.