JL / JT Alpine Short Control Arms: • Adjustable Alpine Short Control Arms balance front caster angle and pinion angles as well as optimize rear pinion angle and tune anti-squat geometry for proper suspension alignment on 0-4.5″ lift kits • Alpine Short Control Arms are constructed from durable 42mm x 4mm wall DOM tube for maximum strength • Bolts to the factory control arm mounting brackets JL / JT 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