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 36″ 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. Kit Includes:- One (1) pair of rear lower long arms Adjustable Alpine Long Control Arms & Brackets balance front caster angle and pinion angles as well as optimize rear pinion angle and tune anti-squat geometry for proper suspension alignment on 36″ lift kits Alpine Long Control Arms are constructed from durable 42mm x 4mm (front upper) or 50mm x 5mm (front lower, rear upper, rear lower) wall DOM tube for maximum strength On higher lifts, Alpine Long Arm Brackets reposition frame-end control arm mounting points to restore near factory orientation to reduce bushing stress during droop and shock load transferred through the Alpine Long Control Arms Bolt-on Alpine Long Arm Brackets are gusseted and reinforced for superior strength w/ reduce NVH compared to other long arm kits JL Alpine Control Arms (all): Re-centers axles in the wheel well for proper suspension movement. Can also be used to increase wheelbase Full range of movement will not restrict articulation or flex off-road High-quality, dependable, maintenance-free, factory-style bushings provide excellent NVH (noise, vibration, and harshness) damping and ride quality Zero maintenance forged threaded joints for smooth quiet flex Premium black e-dipped coating on tube and forged rod end housing provides superior durability and corrosion resistance Anodized 6061-T6 aluminum clamp collar to secure rod end after length adjustment Install and drive simple bolt-on installation no welding required TeraFlex Lifetime Warranty against defects Estimated installation time: 2 hours Notes:** Long Control Arms (JL: Alpine IR: # 1310505 or Alpine: # 1316005 and JT: Alpine IR: # 1318005 or Alpine: # 1317005) MUST be used w/ Alpine Long Arm Bracket Kit (JL 2dr: # 1958002 or JL 4dr: # 1958000 or JT: # 1968000) NOT INCLUDED. *** REQUIRES cutting/removal of factory control arm bracketry to install Alpine Long Arm Brackets. **** JT: Alpine Long Arm Brackets are not compatible w/ all rock sliders. Some rock sliders may require disassembly for install. ***** Alignment REQUIRED Fits:Jeep Wrangler JL 2 Door (2018+)Jeep Wrangler JL 4 Door Unlimited (2018+)