Pn -SDKB2003- Stainless Steel -2004 4x4 V8 Extended Cab Shortbed 4 Wheel Disc With Abs Complete Preformed Brake Line Kit Set Made in the Usa Brake Line Sets or Kits A brake line kit or set is complete with all the metal hard lines on the car or . These kits have every line from the cylinder all the way to the back-axle brakes. They are all preformed and ready to be installed. Typical brake line sets have cylinder lines to the valve or Abs, the right and left from the Valve / Abs to the front rubber hoses. Also, lines from the Valve / Abs to the rear of the car or called the (front to rear Line) and Axle lines or trailing arm lines that feed fluid to the rear drum or did brakes. So, a kit is every hard line in the system that carries brake fluid. These sets do not come with the rubber hoses unless noted.