According to Rubicon Express, the RE1540 brake lines support up to a 6" rise, as shown on RubiconExpress.com: Rubicon Express 20 Rear Brake Line Set, Stainless Steel, 4" to 6" Rise. .-RE1540" I installed these brake lines on a 2017 Jeep JKU with 3" Teraflex suspension. I took the JKU to a local brake shop to bleed the brake lines with a scanner. When the mechanic lifted the JKU onto its hydraulic lift, it was NOT able to get all four wheels off the ground before all the brake lines were stretched to the point of failure. Although the mechanic was able to bend the hard brake lines to add a few inches of travel to the soft brake lines, they were still too short for articulation Note: Even through RubiconExpress.Com, these brake lines are said to fit up to a 6-inch lift. Note that they are too short (even if you have a 3" lift) when riding off-road. Street!