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TJ/LJ DIY Rubicon Express Ext. Duty Long Arm Duroflex Upgrade Kit

Tired of having to replace the bushings in your RE control arms over and over and over... cut em' off and go Duroflex.

This "Do It Yourself" package completely replaces all of the joints in your RE control arms and includes weld-on upper rear axle brackets that correct the geometry for proper use with the Game Changing Duroflex Joints.

It is required to cut off the end-rings of the existing control arms and weld on the new MetalCloak end rings in order to use this system; the factory upper rear axle brackets must also be cut off and replaced with the included MetalCloak brackets.
If you are not a DIY-er, then you can get our full replacement Bolt-In control arms for the TJ (here) or the LJ (here).

Get the reliable MetalCloak Duroflex™ Joints with proven durability and the industry's best ride quality. Period.

Our Patented Duroflex Joints (metalcloakpatents.com) feature:
  • Maximum Vibration Dampening
  • Self-Centering
  • Minimum Bushing Wear
  • Misalignment: 34° Joint, 68° Control Arm
  • Unconstrained Rotational Flex
  • Low Maintenance and Easily Rebuildable

Duroflex™ Joints specifically designed for installation on both ends of a suspension link and/or control arm.

Note: This is considered a "builders kit". If you are not fully comfortable with cutting and welding of your control arms, please do not attempt.

MetalCloak Recommends You Have a Suspension Specialist Align Your Truck Once MetalCloak Suspension is Installed.[less...]

Usually Ships in 1-2 Weeks
Price As Configured:
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MetalCloak's Jeep TJ Wrangler Suspension.

Who Is MetalCloak?

MetalCloak creates Game-Changing Products for the Off Road Enthusiast.

Duroflex 101

This short video covers everything you need to know about the basics of the MetalCloak Duroflex Joint.



The Duroflex Upgrade Replacement Upper Control Arm Brackets are stornger than factory brackets.

The 3/16" laser cut brackets and are specifically designed to place the Duroflex Joints in the correct alignment for optimal performance and include a new HD mounting location for your trackbar.

RE Long Arm Upgrade Brackets


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Standard Tube FEnder Clearance

MetalCloak has taken the best features of the most widely used control arm joints and combined those features to create the Patented Duroflex Joint ( metalcloakpatents.com), producing a Low-Maintenance, High-Misalignment (34°), Self-Centering, Rebuildable Joint with an OEM quality ride.

OEM Style Clevite Joint Typical Flex Joint MetalCloak Duroflex Joint
  • High Vibration Dampening
  • Self-Centering
  • Fused at Center Bushing
    (No Bearing Surface Wear)
  • High Transverse Flex
  • High Rotational Flex
  • Rebuildable
  • High Vibration Dampening
  • Self-Centering
  • Fused Center Bushing
    (No Bearing Surface Wear)
  • High Transverse Flex
  • High Rotational Flex
  • Rebuildable

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High Vibration Dampening & Self Centering...

Made of a Proprietary Rubber Compound, the High Vibration Dampening and Self-Centering characteristics of the Duroflex Joint means you will always get...

  • The best ride quality
  • No binding of your control arms.
  • None of the micro-wear that DESTROYS Flex Joints

Standard Tube FEnder Clearance
Standard Tube FEnder Clearance

High Misalignment...

By adapting the High Transverse Flex characteristics of a typical Flex Joint, the Duroflex Joint gives you...

  • Over 34° of Misalignment
  • Over 68° per Control Arm

Absorbs Micro-Movements...

Because the Duroflex Bushing absorbs the millions of Rotational Micro-Movements found in your daily driving, you get...

  • Improved Ride Quality
  • None of the micro-wear that DESTROYS Flex Joints
Standard Tube FEnder Clearance
Standard Tube Fender Clearance

True Bearing Surface...

The outer surface of the Duroflex Bushing acts as a bearing, breaking free when called for, giving you...

  • Maximum Rotation & Articulation
  • No "Binding Up" of the Control Arms

Low Maintenance & Rebuildable...

Unlike typical Flex Joints, the Duroflex does not require replacing key parts every year like others...

But, when you do need to rebuild it, it is MetalCloak Easy!

Just pull out the Duroflex Bushing, clean it up, add some new Teflon impregnated, synthetic silicone grease. Reassemble.


Standard Tube FEnder Clearance

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MetalCloak's Duroflex Joint provides 28° more articulation and flex than typical control arms!

Standard Tube FEnder Clearance Standard Tube FEnder Clearance

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Duroflex Bushing Proprietary Vulcanized Rubber
Forged Housing 1040 Steel
Total Weight 5 lbs
Available in Gold Zinc? Yes - Housing
OEM Clevite and Typical Flex Joint is the Duroflex Joint
Installation Difficulty Difficult
Body Modification Cutting & Welding
Time to Install 15 - 20 Hours

As a "Builders Kit" we do not provide step-by-step instructions. If you are not familiar with how to remove your current parts and install these parts, we recommend you have a professional tackle the job.

Questions? Please feel free to call us at 916-631-8071.

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