The Rubicon Express Extreme-Duty Long Arm System was the first radius long arm suspension available for the Jeep Wrangler JK. This system has been engineered to work WITH your Jeep’s Electronic Stability Controls and Rubicon edition electronic sway bar WITHOUT compromising safety. Featuring our world-class chromoly Radius Long Arms, the geometry has been meticulously designed to keep pinion and driveshaft angles in phase, while eliminating suspension jacking and unwanted suspension squat. We use 2" x .250 wall Chromoly tubing for our lower control arms for serious off roading use. Our Extreme-Duty Long Arm system coupled with properly valved Rubicon Express shocks allows the JK Wrangler to transmit throttle input to the wheels over varied terrain, providing sure-footed traction and positive suspension feedback. The result is superior on road handling and unrivaled off road performance, without the need to disable factory safety features. The 3.5” suspension will allow the use of 35” tires. The 4.5” suspension will allow the use of 37” tires. Driveline modifications will be required.
  • Applications:

  • *Shocks listed are recommended mono-tubes and are sold separately unless otherwise specificed

Part #YearModelLiftDescriptionFront ShocksRear ShocksMax TireRecommended WheelImportant Information
JK4343PMR2007-2018JK Wrangler 4DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JK4423MR2007-2018JK Wrangler 2DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JK4423PMR2007-2018JK Wrangler 2DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JK4444MR
JK4R23MR2007-2018JK Wrangler 2DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JKR423MR2007-2018JK Wrangler 2DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JKRR232007-2018JK Wrangler 2DR3.5"Extreme-Duty Long Arm37X12.509"W,3.75-4.75"B.S
Important Info
JKRR23M2007-2018JK Wrangler 2DR3.5"Extreme-Duty Long ArmRXJ713RXJ71437X12.509"W,3.75-4.75"B.S
Important Info
JKRR23MR2007-2018JK Wrangler 2DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JKRR242007-2018JK Wrangler 2DRExtreme-Duty Long Arm37X12.509"W,3.75-4.75"B.S
Important Info
JKRR24M2007-2018JK Wrangler 2DRExtreme-Duty Long ArmRXJ711RXJ71237X12.509"W,3.75-4.75"B.S
Important Info
JKRR432007-2018JK Wrangler 4DRExtreme-Duty Long Arm37X12.509"W,3.75-4.75"B.S
Important Info
JKRR43M2007-2018JK Wrangler 4DRExtreme-Duty Long ArmRXJ713RXJ71437X12.509"W,3.75-4.75"B.S
Important Info
JKRR43MR2007-2018JK Wrangler 4DR3.5"Extreme-Duty Long Armincinc35x12.509" W, 3.75-5.0" B.S.
Important Info
JKRR442007-2018JK Wrangler 4DRExtreme-Duty Long Arm37X12.509"W,3.75-4.75"B.S
Important Info
JKRR44M2007-2018JK Wrangler 4DRExtreme-Duty Long ArmRXJ711RXJ71237X12.509"W,3.75-4.75"B.S
Important Info