Add line lock capabilities to your S550 or upgrade your factory line lock with JPC's new 2015-2018 Mustang line lock kit! Adding a line lock kit to your Mustang allows you to lock your front wheels independently from your rear wheels with the flip of a switch. This is a great feature for doing burnouts to warm your rear wheels up for a race. You can also upgrade your current line lock system to a higher-quality JPC kit with stainless steel brake lines. It can be difficult to set up the factory line lock kit because of all the screens that are needed to go through. With JCP being the only aftermarket company to make a 2015+ line lock kit, you can enable the line lock in an instant. This kit allows you to have a stiffer brake pedal feel and improves your braking tremendously! JPC featured stainless steel brake lines in this kit to improve the quality and to ensure a long-lasting use. Installation parts are included to ensure you have all new parts instead of having to reuse old hardware.