This set includes four extended brake lines ( 89716) designed for JK models from 2007 to 2018 equipped with a 4- to 6-inch lift and 2.0L, 3.6L, or 3.8L engines.The lines are engineered as direct replacements for the front and rear brake systems, maintaining alignment with dimensions for proper fit and function.Constructed to support consistent braking performance, these lines offer strong bursting resistance and controlled expansion in line with OEM specifications.They are built with materials rated for temperature environments, supporting long-term under varied driving conditions.Installation requires no vehicle modifications.