The Trail-Gear Samurai Spring Over Axle Conversion Kit comes with all the needed parts to install your spring over on both the front and rear axles. DOT approved extended brake lines and 9/16 inch u-bolts are included in the kit along with with laser cut, CNC formed 1/4 inch spring perches. This is a kit that is simply built to last. No need to take your driveline to a shop to be resized after the conversion is completed because we have also included our world famous billet driveline spacers with all needed hardware. Once the spring over conversion is completed you will be able to install larger tires and a high steer kit.