TeraFlex JL: Alpine Long Control Arms and Alpine Long Arm Brackets (NOT INCLUDED) provide complete alignment adjustability and dependability for maximum performance on JL Wrangler/Unlimited models with 3–6" lifts. Can be added to any existing suspension lift. High-quality dependable maintenance-free factory-style bushings provide excellent NVH damping and ride quality. Must be used with Alpine Long Arm Bracket Kit (JL 2-Door: 1958002 or JL 4-Door: # 1958000) – NOT INCLUDED.