TeraFlex JK: Sport Control Arms provide maintenance-free and dependable performance on JK Wrangler/Unlimited models with 2.5-3 Inch Lifts. Bolts to the factory control arm mounting brackets.High-quality, dependable, maintenance-free, factory-style bushings provide excellent NVH damping and ride quality.Can be added to any existing suspension lift.Sport Control Arm Pairs: Arm Pair - Front Lower (# 1252000) Arm Pair - Rear Upper (# 1252300) Vehicle(s): JK Wrangler (2-door) JK Wrangler Unlimited (4-door) Specs: Lift Height: 2.5-3 Inch Control Arm Specs: JK: Sport Control Arm Pair - Front Lower (# 1252000): Tube Diameter & Wall: 42mm x 4mm Factory Length: 22-5/8 Inch Preset Length: 22-13/16 Inch Bolt - Both: 14mm Bushing - Both: 611011 JK: Sport Control Arm Pair - Rear Upper (# 1252300): Tube Diameter & Wall: 42mm x 4mm Factory Length: 17-7/16 Inch Preset Length: 17-11/16 Inch Bolt - Both: 14mm Bushing - Both: 611012