Our custom designed brake lines are manufactured by one of the top names in the industry. They feature an internal Kevlar weave which makes them withstand the toughest DOT tests, then wrapped in a durable stainless steel braid.. These lines are specifically designed to fit Audi A4, Passat, and MkIV vehicles using Porsche Boxster calipers and 312mm rotors. These lines include necessary banjo bolts and are DOT approved. These lines are included with our Stage 2 brake upgrade kits.